CN115581328A

CN115581328A - Shoes with removable sole

Info

Publication number: CN115581328A
Application number: CN202111461363.1A
Authority: CN
Inventors: 吴世浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-05
Filing date: 2021-12-02
Publication date: 2023-01-10
Also published as: KR102416522B1; US20230000203A1

Abstract

To provide a shoe in which a cushioning layer can be effectively bent even though an outsole of the shoe has the thick cushioning layer to distribute weight so as not to apply tension to movement during walking, the shoe according to the present invention includes: an upper configured to encompass at least a particular area of a wearer's foot; a support part disposed under the upper and supporting the foot; and a walking assistance part which is provided in the support part, is adjacent to the metatarsophalangeal joint area of the foot, and generates elastic force in the walking direction of the wearer.

Description

Shoes with removable sole

Technical Field

The present invention relates to a shoe, and more particularly, to a shoe capable of reducing sprain of a foot joint during walking.

Background

Generally, shoes refer to articles that a person wears on the foot while standing or walking on the ground. The shoe includes a cushioning pad for foot health. The cushioned shoe also benefits the knee and back of the wearer.

Conventional technology of shoes has been disclosed in korean patent publication No. 2013-0071160. The present invention maintains foot health by providing a multi-layered cushion under the shoe.

However, the footwear with the cushion pad cannot avoid the thickening of the footwear. In addition, the cushion pad lacks elasticity in the horizontal direction for elasticity in the vertical direction, thereby causing a problem that the shoe sole cannot be well bent. The metatarsophalangeal joint area is bent a lot when the wearer walks. In particular, when the wearer is performing intense movements such as running, the metatarsophalangeal joint area bends more.

Fig. 15 shows shoe walking and barefoot walking. As shown in FIG. 15, walking with shoes is different from barefoot walking if the soles of the shoes are not bent.

In particular, if the sole of the shoe is thicker and less elastic in the horizontal direction, more force is required and the joint is tensioned to fold the metatarsophalangeal joint area. To solve this problem, a product has been disclosed which is hollow or has a corrugated sole so that the shoe can be easily bent. However, the disclosed products still have the following problems: power is required to bend the metatarsophalangeal joint region, even if the shoe is bent relatively easily, causing inconvenience due to stumbling over a step or the like or capturing foreign matter therein.

Disclosure of Invention

An aspect of the present invention provides a shoe in which a cushioning layer is effectively bent even though an outsole of the shoe has a thick cushioning layer to disperse weight, thereby not applying tension to movement during walking.

According to an embodiment of the present invention, there is provided a shoe including: an upper configured to encompass at least a specific area of a foot of a wearer; a support portion disposed under the upper and supporting a foot; and a walking assistance portion that is provided in the support portion, is adjacent to a metatarsophalangeal joint region of the foot, and generates an elastic force in a walking direction of the wearer.

The walking aid can be compressed in a mid-stance action of the wearer and restored in a toe-off action of the wearer.

The walking aid may include a plurality of walking aids disposed below the metatarsophalangeal joint, and the metatarsophalangeal joint may be located between the plurality of walking aids.

The walking assistance portion may be formed as a single body below the metatarsophalangeal joint.

The support portion may include a mounting groove formed to straddle the support portion in a width direction thereof, and the walking aid may be mounted to the mounting groove.

The walking assistance portion may be disposed to cross the support portion in a width direction of the support portion, and formed to have a trapezoidal cross section in a length direction of the support portion.

The walking aid may comprise a material that is highly elastic in the walking direction of the wearer.

The walking assistance portion may be shaped like a torsion spring.

The mounting groove may be shaped such that its cross section tapers upward in the length direction of the support portion.

The walking assistance portion may include: a first frame region disposed adjacent to a front region of the mounting slot; a second frame region disposed adjacent to a rear region of the mounting groove; and an elastic region connecting the first frame region and the second frame region and generating an elastic force between the first frame region and the second frame region.

The walking assistance portion may assist the support portion to generally bend the front region upward at an angle of 10 to 40 ° with respect to the metatarsophalangeal joint, and generate elastic force when the support portion is compressed by an external force while contacting the ground and then leaves the ground.

The support portion may include: an outsole disposed below the upper; and a midsole disposed between the upper and the outsole, and the walking assistance part may be disposed in the outsole or both the outsole and the midsole.

The walking assistance portion may include: a first auxiliary portion disposed forward relative to the metatarsophalangeal joint; and a second assistance portion provided rearward with respect to the metatarsophalangeal joint, wherein angles at which the support portion bends during walking of the wearer are different in the first assistance portion and the second assistance portion.

The first auxiliary portion may bend a front region of the support portion at an angle of 15 to 25 °, and the second auxiliary portion may bend a rear region of the support portion at an angle of 45 to 65 °.

The first and second auxiliary portions may be formed such that the bottom side is longer than the top side.

The bottom side of the first auxiliary portion may be elongated in the forward direction, and the bottom side of the second auxiliary portion may be elongated in the rearward direction.

The aforementioned technical effects of the present invention are not limited to the above-mentioned effects, and other technical effects not mentioned will be apparent to those skilled in the art from the following description.

Drawings

The foregoing and/or other aspects will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a side view of a shoe according to a first embodiment;

FIG. 2 is a bottom view of the shoe according to the first embodiment;

FIG. 3 illustrates the general structure of a foot;

figures 4 to 6 show possible diseases of the metatarsophalangeal joint;

FIG. 7 illustrates the motion of the foot in a typical walking motion;

FIG. 8 shows the joints of the foot in a normal state;

FIG. 9 illustrates a mid-standing action of the shoe according to the first embodiment;

FIG. 10 illustrates a toe-off action of the footwear according to the first embodiment;

FIG. 11 is a side view of a shoe according to a second embodiment;

FIG. 12 shows a walking aid in a shoe according to a second embodiment;

FIG. 13 illustrates a mid-standing action of the shoe according to the second embodiment;

FIG. 14 illustrates a toe-off action of the shoe according to the second embodiment;

fig. 15 shows shoe walking and barefoot walking.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments are not limited to the following embodiments set forth herein, but may be implemented in various forms. The following examples are provided to fully describe the present invention and to enable those skilled in the art to understand the scope of the present invention. In the drawings, the shapes of elements and the like may be exaggerated for better clarity of description, and the same reference numerals denote the same elements.

Fig. 1 is a side view of a shoe according to a first embodiment, and fig. 2 is a bottom view of the shoe according to the first embodiment. In addition, fig. 3 shows the structure of a general foot.

As shown in fig. 1 to 3, the shoe 1000 according to the first embodiment includes the elastic walking assistance part 100 in the

support parts

1200 and 1300 forming the lower region. Thus, footwear 1000 does not exert tension on the wearer's movements during walking.

Typically, as shown in fig. 4-6, the metatarsophalangeal joints in the body structure are used to connect the metatarsals with the phalanges. In other words, the metatarsophalangeal joint is the site to which a great weight is applied during walking and where bending and compression are greatest. Therefore, the metatarsophalangeal joint and its surrounding area are susceptible to arthritis, metatarsalgia, inter-digital neuralgia, morton's neuroma, hallux valgus, and the like.

Accordingly, support

portions

1200 and 1300 of footwear 1000 need to have a thick cushion layer for weight distribution and effectively flex in the area adjacent to the metatarsophalangeal joint.

In addition, as shown in fig. 7, the motion of the foot during walking is divided into heel-strike-mid-stance-toe-off phases. Referring to the motion of the foot during walking, it can be seen that the most bending part in the motion of the foot during walking is the metatarsophalangeal joint area in the toe-off phase. The metatarsophalangeal joint is the area that consumes the most energy during the toe-off phase of lifting the heel and moving forward by imparting power to the toes.

Referring back to fig. 1 to 3, in order to solve the above-described problems, the shoe 1000 according to the first embodiment may include an upper 1100, a midsole 1200, an outsole 1300, and a walking aid 100.

Upper 1100 may have various shapes depending on the type of footwear 1000. For example, upper 1100 forms the entire upper area of footwear 1000 and is utilized to protect a wearer's foot. In addition, the midsole 1200 is disposed between the upper 1100 and the outsole 1300 and provides cushioning. In addition, the outsole 1300 is positioned below the midsole 1200 and impacts the ground. Here, the midsole 1200 and the outsole 1300 are provided to form the

support portions

1200 and 1300 of the shoe 1000.

Meanwhile, the walking assistance portion 100 is provided as an elastic body.

For example, the walking aid 100 may be made of a material having high elasticity in the horizontal direction, i.e., in the length direction of the shoe 1000. The walking aid 100 may be provided in the outsole 1300 or in both the outsole 1300 and the midsole 1200.

For example, the walking aid 100 is disposed adjacent to the metatarsophalangeal joint and forms a pair below the metatarsophalangeal joint, so that the metatarsophalangeal joint can be located between the pair of walking aids 100. Further, the walking aid 100 may be provided as a single body and placed under the metatarsophalangeal joint. However, this is only for describing the embodiment, and at least one walking aid 100 or more than two walking aids 100 may be provided.

In addition, the walking aid 100 may be installed to span the outsole 1300 or the outsole 1300 and the midsole 1200 in the width direction of the shoe 1000. However, this is merely for the purpose of describing this embodiment, and at least one region of the walking aid 100 may be surrounded by the midsole 1200 or the outsole 1300.

In addition, the walking aid 100 may be formed such that the bottom side is longer than the top side. For example, the walking aid 100 may be formed to have a trapezoidal cross-section in the lengthwise direction of the shoe 1000.

Therefore, the front region of the shoe 1000 is provided to face upward at an angle of 10 to 40 ° by the walking assistance portion 100. In other words, the walking aid 100 having a trapezoidal cross section in the length direction may bend the toe region of the shoe 1000 upward, as compared to the conventional shoe. Thus, the toes of the wearer wearing the shoe 1000 face upward.

Meanwhile, the walking aid 100 may include a first aid 110 disposed forward with respect to the metatarsophalangeal joint and a second aid 120 disposed rearward with respect to the metatarsophalangeal joint.

In this case, the angles at which the outsole is bent may be different in the first and second

auxiliary parts

110 and 120. For example, the angle at which outsole 1300 is bent may vary depending on the use of footwear 1000. When the outsole 1300 is bent at an angle of 60 to 90 °, the first auxiliary part 110 bends a front region of the outsole at an angle of 15 to 25 °, and the second auxiliary part 120 bends a rear region of the outsole at an angle of 45 to 65 °.

In addition, the bottom sides of the first and second

auxiliary parts

110 and 120 may be longer than the top sides so as to smoothly assist walking when the outer bottom 1300 is bent. In this case, the bottom side of the first auxiliary portion 110 may be elongated in the forward direction, and the bottom side of the second auxiliary portion 120 may be elongated in the rearward direction. Therefore, the front region of the outsole 1300 is more easily stretched and bent by the first auxiliary part 110, and the rear region of the outsole 1300 is more easily stretched and bent by the second auxiliary part 120.

As shown in fig. 8, when the metatarsophalangeal joint is flexed, the person's toes are pointed generally upward. Accordingly, the wearer's toes face upward while wearing the footwear, thereby maintaining foot comfort.

Further, even when the wearer is in a driving or sitting posture, dorsiflexion in which the toes of the wearer bend toward the instep is maintained. Accordingly, when the wearer wears the shoe 1000, the toes of the wearer face upward, thereby maintaining foot comfort even when driving or sitting.

In this way, the walking aid 100 assists the most bending foot portion, i.e., the metatarsophalangeal joint region, to be easily bent. Further, the walking assistance portion 100 assists the movement of lifting the heel of the foot using elasticity in the toe-off stage that consumes the most energy.

In other words, conventional footwear requires a force for flexing the lower region of the footwear when the metatarsophalangeal joint region flexes during the toe-off phase.

On the other hand, the shoe 1000 according to the first embodiment includes the walking assistance part 100 so that the

support parts

1200 and 1300 of the shoe 1000 can be easily bent, thereby reducing energy consumed during walking. Accordingly, the shoe 1000 requires less force for the joint and its surroundings and the foot is not tightened, thereby having an effect of preventing various possible diseases of the foot.

Next, the movement of the foot wearing the shoe during walking will be described. However, repetitive description will be avoided, and like reference numerals refer to like parts throughout.

Figure 9 shows a mid-standing action of the shoe according to the first embodiment and figure 10 shows a toe-off action of the shoe according to the first embodiment.

As shown in fig. 9 and 10, the toe portion of the shoe 1000 according to the first embodiment is bent upward. Furthermore, during a mid-standing action in which the foot is placed on the ground, the toes and arch are held parallel to the ground by the weight of the wearer. In this case, the

support portions

1200 and 1300 of the shoe 1000 are also maintained parallel to the ground, and thus the

support portions

1200 and 1300 of the walking assistance part 100 are contracted. Therefore, the walking assistance part 100 is urged to return to its original shape by the elasticity in the horizontal direction.

Then, gait switches from the mid-stance phase to the toe-off phase. Therefore, when the wearer first lifts the heel, the walking assist portion 100 assists the metatarsophalangeal joint of the wearer to be easily bent as the contracted lower region returns to its original shape. In addition, the walking assistance portion 100 assists the heel to be lifted. Since the metatarsophalangeal joint is easily flexed, the stress acting on the metatarsophalangeal joint is reduced, thereby preventing pain in the metatarsophalangeal joint, neuralgia between the toes, and the like. Furthermore, there is an advantage of reducing the overall energy consumption during walking.

Next, a shoe according to a second embodiment will be described in detail. However, repetitive description will be avoided, and like reference numerals refer to like parts throughout.

Fig. 11 is a side view of a shoe according to the second embodiment, and fig. 12 shows a walking aid in the shoe according to the second embodiment. Further, fig. 13 shows a mid-standing action of the shoe according to the second embodiment, and fig. 14 shows a toe-off action of the shoe according to the second embodiment.

As shown in fig. 11 to 14, the shoe 1000 according to the second embodiment may include at least one mounting groove 1000a in the

support portions

1200 and 1300 of the shoe 1000 adjacent to the metatarsophalangeal joint.

The mounting grooves 1000a are provided adjacent to the metatarsophalangeal joint and form a pair under the metatarsophalangeal joint so that the metatarsophalangeal joint can be located between the pair of mounting grooves 1000a. However, the mounting groove 1000a may be provided as a single body and located below the metatarsophalangeal joint. Alternatively, more than two multiple mounting slots may be provided.

The mounting groove 1000a may be provided across the outsole 1300 or across the outsole 1300 and the midsole 1200, i.e., the

support portions

1200 and 1300, in the width direction of the shoe. In addition, the mounting groove 1000a may be formed such that the lower portion is longer than the upper portion in the length direction of the shoe. However, this is only for describing the embodiment, and there is no limitation in the shape of the mounting groove.

Meanwhile, the walking assistance part 100 is mounted to the mounting groove 1000a.

For example, the walking aid 100 may be shaped like a torsion spring. The walking aid 100 may include a first frame region 110, a second frame region 120, and an elastic region 130 to provide elasticity in a horizontal direction, i.e., in a length direction of the shoe 100.

The first frame region 110 is installed adjacent to an inner front region of the installation groove 1000a, and the second frame region 120 is installed adjacent to an inner rear region of the installation groove 1000a. Further, the elastic region 130 is disposed adjacent to an inner upper region of the mounting groove 1000a and connects the first frame region 110 and the second frame region 120 so that the walking aid 100 can provide elasticity in a horizontal direction.

Therefore, the mounting groove 1000a adjacent to the metatarsophalangeal joint is generally opened in the lower region by the walking aid 100. Accordingly, the toes of the wearer wearing the shoe 1000 remain bent upward.

In addition, when the foot has a middle standing motion during walking, the

support portions

1200 and 1300 of the shoe 1000 are compressed by the body weight of the wearer and the lower region of the mounting groove 1000a is narrowed. In this case, the first frame area 110 and the second frame area 120 of the walking assistance portion 100 approach each other, and are urged to return to their original shapes by elasticity in the horizontal direction.

Gait then switches from the mid-stance phase to the toe-off phase. In this case, when the wearer lifts the heel, the narrowed first frame region 110 and second frame region 120 of the walking assistance part 100 are widened, so that the mounting groove 1000a is easily opened.

Since the metatarsophalangeal joint is easily flexed, the stress acting on the metatarsophalangeal joint is reduced, thereby preventing pain in the metatarsophalangeal joint, neuralgia between the toes, and the like. In addition, the walking device has the advantage of reducing the overall energy consumption in the walking process.

Thus, the footwear according to the present invention relieves stress on the metatarsophalangeal joints during wearing and walking of the wearer, thereby having effects of preventing various diseases and maintaining the comfort of the foot.

The shoe according to the present invention has the following effects: various diseases are prevented because stress acting on the metatarsophalangeal joint is relieved during wearing and walking of the wearer, and the foot is kept comfortable because weak force is enough to bend the outsole during walking, and thus walking is easily assisted.

The aforementioned technical effects of the present invention are not limited to the above-mentioned effects, and other non-mentioned technical effects will be apparent to those skilled in the art from the following description.

The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The scope of the present invention is defined by the appended claims, and various improvements and modifications can be made to the technical idea of the present invention by those skilled in the art. Accordingly, such improvements and modifications as would be apparent to those skilled in the art are intended to be within the scope of this invention.

Claims

1. An article of footwear, comprising:

an upper configured to enclose at least a specific area of a foot of a wearer;

a support portion disposed below the upper and supporting the foot; and

a walking aid provided in the support part, the walking aid being adjacent to a metatarsophalangeal joint area of the foot, and the walking aid generating an elastic force in a walking direction of the wearer.

2. The shoe of claim 1, wherein,

the walking aid is compressed in a mid-stance action of the wearer and is restored in a toe-off action of the wearer.

3. The shoe of claim 1, wherein,

the walking assistance portion includes a plurality of walking assistance portions provided below the metatarsophalangeal joint, and

the metatarsophalangeal joint is located between the plurality of walking aids.

4. The shoe of claim 1, wherein the walking aid is monolithic beneath the metatarsophalangeal joint.

5. The shoe of claim 1, wherein,

the support portion includes a mounting groove formed to straddle the support portion in a width direction thereof, and

the walking assistance part is mounted to the mounting groove.

6. The shoe according to claim 5, wherein the walking assist portion is provided across the support portion in the width direction of the support portion, and is formed to have a trapezoidal cross section in a length direction of the support portion.

7. The shoe of claim 6, wherein the walking aid comprises a material that is highly elastic in the walking direction of the wearer.

8. The shoe of claim 5, wherein the walking aid is shaped like a torsion spring.

9. The shoe of claim 5, wherein the mounting groove is shaped to be narrowed upward along a cross section of the mounting groove in a length direction of the support part.

10. The shoe of claim 9, wherein the walking aid comprises:

a first frame region disposed adjacent to a front region of the mounting slot;

a second frame region disposed adjacent to a rear region of the mounting groove; and

an elastic region connecting the first frame region and the second frame region and generating an elastic force between the first frame region and the second frame region.

11. The shoe according to claim 1, wherein the walking assistance portion assists the support portion to bend a front area upward by an angle of 10 ° -40 ° with respect to the metatarsophalangeal joint, and generates elastic force when the support portion is compressed by an external force while contacting the ground and then leaves the ground.

12. The shoe of claim 1, wherein,

the support portion includes: an outsole disposed below the upper; and a midsole disposed between the upper and the outsole, and

the walking aid is disposed in the outsole or in both the outsole and the midsole.

13. The shoe of claim 1, wherein the walking aid comprises:

a first auxiliary portion disposed forward relative to the metatarsophalangeal joint; and

a second auxiliary portion disposed posteriorly relative to the metatarsophalangeal joint,

wherein angles at which the support portion is bent during walking of the wearer are different in the first and second auxiliary portions.

14. The shoe of claim 13, wherein,

the first auxiliary portion bends a front side region of the support portion at an angle of 15-25 DEG, and

the second auxiliary portion bends a rear side region of the support portion at an angle of 45-65 °.

15. The shoe of claim 14, wherein the first and second secondary portions are formed with a bottom side longer than a top side.

16. The shoe of claim 15, wherein,

the bottom side of the first auxiliary portion is elongated in the forward direction, and

the bottom side of the second auxiliary portion is elongated in the rearward direction.