Functional shoes that use a windlass mechanism to help alleviate plantar fasciitis and reduce impact on the spine and knee joints.

Abstract

To provide a functional shoe that is capable of helping alleviation of plantar fascilitis and reducing an impact to the spine and knee joints by using a windlass mechanism that is capable of inducing a wearer's foot into a natural arch shape while changing to correspond to movement of the wearer's foot when wearer walks.SOLUTION: Provided is a functional shoe that includes: an outsole that flexes in response to bending of the wearer's foot when the wearer walks and supports the arch of the foot; and an upper connected to the outsole to support the instep of the wearer's foot; wherein the outsole includes: an arch support portion to support the arch of the wearer's foot; a first folding guide groove that guides the folding of the outsole when the wearer walks; and a second folding guide groove connected to the first folding guide groove for guiding the folding of the outsole when the wearer walks; the first and second folding guide grooves being each formed in a dome structure whose width gradually decreases along a concave direction from an outer surface of the outsole.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a functional shoe that uses a windlass mechanism to relieve plantar fasciitis and reduce the impact on the spine and knee joints.

Background Art

[0002] Generally, on the sole of the foot, a plantar fascia that extends two branches from the calcaneus toward the toes and attaches to the basal part of the toes is formed.

[0003] The plantar fascia functions to maintain the arch of the sole of the foot by means of a truss and windlass mechanism, and plays an important role in walking, not only absorbing shock but also helping to lift the foot when the weight is placed on it. On the other hand, plantar fasciitis may occur in the foot. Plantar fasciitis occurs near the calcaneus and has the characteristic of moving forward on the sole of the foot.

[0004] More specifically, plantar fasciitis is a term that represents pain in the proximal arch and heel. Due to various causes, the plantar fascia that supports the longitudinal arch of the foot repeatedly suffers microdamage, inducing degeneration of the collagen that constitutes the fascia and causing inflammation.

[0005] The pain caused by plantar fasciitis starts from the heel and spreads in the direction of the forefoot as the symptoms worsen. When it becomes chronic, there are problems such as body shape imbalance due to a continuously incorrect walking pattern, as well as a significant impact on the knee joints and spine.

[0006] To solve this problem, functional shoes that support the arch of the foot have been developed in the past. However, conventional functional shoes only support the arch of the foot when the foot is not moving, and when walking, they cannot completely adhere to the foot, and the effect of substantially reducing the pain and fatigue caused by plantar fasciitis is very minimal.

[0007] Furthermore, conventional functional shoes have the problem that they cannot bend in accordance with the shape of the foot when the wearer walks, preventing the wearer from fully bending their foot while walking. This prevents the natural arch of the foot from being maintained, which can worsen plantar fasciitis or have adverse effects on the knee joint and spine. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Registered Patent Publication No. 10-2226475 [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] The present invention was devised to solve the aforementioned problems, and the object of the present invention is to provide a functional shoe that helps alleviate plantar fasciitis and reduces impact on the spine and knee joint with a windlass mechanism that can guide the wearer's foot into a natural arch shape while being variable to respond to the wearer's foot movements when the wearer walks. The problems addressed by the present invention are not limited to those mentioned above; any other problems not mentioned should be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0010] A functional shoe that helps alleviate plantar fasciitis and reduces impact on the spine and knee joint using a windlass mechanism according to an embodiment of the present invention to solve the aforementioned problems is a functional shoe that allows the wearer to bend the instep of the foot when walking, and includes an outsole that supports the arch of the foot, supports the sole of the foot and bends in response to the bending of the wearer's foot when walking, and an upper that is coupled to the outsole and supports the instep of the foot, wherein the outsole has an arch support portion that protrudes from the upper surface of the outsole and supports the arch of the wearer's foot, and front The outsole includes a plurality of first bending guide grooves formed on the bottom surface of the outsole along its length, which guide the bending of the outsole when the wearer walks, and a plurality of second bending guide grooves formed on the side surface of the outsole along its length, which are connected to the first bending guide grooves, which also guide the bending of the outsole when the wearer walks. The first bending guide grooves and the second bending guide grooves are each formed in a dome structure in which the width gradually decreases along the direction of indentation from the outer surface of the outsole.

[0011] The outsole further includes a cushioning groove formed recessed in the bottom surface of the outsole to support and distribute the load transmitted through the foot, wherein the cushioning groove is recessed to a greater depth than the first and second bending guide grooves and may be formed as a dome structure in which the width gradually decreases along the recessed direction from the outer surface of the outsole.

[0012] The cushioning groove includes a first cushioning groove that supports and distributes a load applied from the heel, and a second cushioning groove that extends from the first cushioning groove in the longitudinal direction of the outsole and supports and distributes a load applied from the arch of the foot, wherein the first cushioning groove may have a wider width than the second cushioning groove, and the second cushioning groove may have a longer length than the first cushioning groove.

[0013] The outsole further includes a water film prevention groove formed in the bottom surface of the outsole to a depth even shallower than the first bending guide groove and the second bending guide groove, and the water film prevention groove may be arranged intersecting the first bending guide groove.

[0014] The outsole may further include a foot-receiving groove formed in the upper surface of the outsole at a predetermined depth, which accommodates a portion of the sole of the foot, and an edge support portion which supports the edge of the heel that is accommodated in the foot-receiving groove.

[0015] The outsole further includes a support frame housed inside the outsole and supporting the arch support and the edge support; a first cushioning cushion housed inside the outsole and supported by a portion of the support frame to support and distribute a load applied from the heel; and a second cushioning cushion housed inside the outsole and supported by another portion of the support frame to support and distribute a load applied from the arch of the foot, wherein the first cushioning cushion and the second cushioning cushion may each include an air pouch supported by the support frame and filled with air, a spherical cushioning cell made of an elastic material housed inside the air pouch, and a valve unit coupled to the air pouch and configured to inject and discharge air into the air pouch.

[0016] The outsole may further include a silicone interference pad housed inside the outsole, which supports and distributes the load transmitted through the big toe of the foot during walking.

[0017] The upper is detachably coupled to the outsole, and the outsole may further include a recess groove into which the end of the upper is pressed, a nut member housed inside the outsole, and an upper fixing bolt that penetrates the outsole and a portion of the upper that is pressed into the recess groove and fastens to the nut member.

[0018] The upper further includes a gap-adjusting cushion housed inside the upper and which expands or contracts to adjust the gap between the inner surface of the upper and the instep of the foot, thereby making the upper fit snugly against the instep of the foot, the gap-adjusting cushion may include a gap-adjusting pouch having a first air cell and a second air cell separated from the first air cell and positioned above the first air cell, a first gap-adjusting valve unit coupled to the gap-adjusting pouch and configured to inject and discharge air into the first air cell, and a second gap-adjusting valve unit coupled to the gap-adjusting pouch and configured to inject and discharge air into the second air cell.

[0019] The outsole further includes an anti-slip cap that is detachably coupled to the bottom surface of the outsole, the anti-slip cap may include a bent-shaped engagement portion that is detachably coupled to a cut groove formed in the bottom surface of the outsole, a support plate positioned between the engagement portions and supported by the bottom surface of the outsole, a hook projection formed protruding from the inner surface of the support plate and inserted into the bottom surface of the outsole, and an anti-slip pad that is detachably coupled to the support plate and supported by the outer surface of the support plate. [Effects of the Invention]

[0020] According to embodiments of the present invention, since bending guide grooves are formed on the bottom surface and the side surface of the outsole, the wearer's foot can be guided to the natural arch shape of the foot when walking, thereby minimizing the burden on plantar fasciitis.

[0021] Furthermore, a dome-shaped cushioning groove is formed on the bottom surface of the outsole to distribute the load applied vertically from the wearer's heel and arch. As a result, pressure points are not concentrated on the heel and toes, but are distributed across the entire sole of the foot, thereby minimizing the impact on the ankle, knee, and spine.

[0022] The effects of the present invention are not limited to those exemplified above, and a wide variety of other effects are included within the scope of this invention. [Brief explanation of the drawing]

[0023] [Figure 1] It is a side view showing a functional shoe according to an embodiment of the present invention. [Figure 2] It is a bottom view showing a functional shoe according to an embodiment of the present invention. [Figure 3] It is a cross-sectional view showing a buffer groove according to an embodiment of the present invention. [Figure 4] It is a longitudinal sectional view showing a buffer groove according to an embodiment of the present invention. [Figure 5] It is a plan view showing a state in which a buffer pad according to an embodiment of the present invention is coupled to an outsole. [Figure 6] It is a longitudinal sectional view schematically showing a state in which a support frame according to an embodiment of the present invention is disposed inside an outsole. [Figure 7] It is a cross-sectional view showing a state in which a buffer cushion is coupled to a support frame according to an embodiment of the present invention. [Figure 8] It is a sectional view showing a buffer cushion according to an embodiment of the present invention. [Figure 9] It is a view schematically showing a coupling structure between an upper and an outsole according to an embodiment of the present invention. [Figure 10] It is a sectional view schematically showing a gap adjustment cushion according to an embodiment of the present invention. <​​​​​​​​​​​​

[0026] Terms such as "first" or "second" are used to describe a variety of components, but such terms should be analyzed solely for the purpose of distinguishing one component from others. For example, the first component may be called the second component, and similarly, the second component may also be called the first component.

[0027] When it is mentioned that one component is "linked" to another, it should be understood that it may be directly linked to or connected to the other component, but there may also be other components in between.

[0028] The terms used in the examples are for illustrative purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “includes” or “having” specify the presence of features, figures, steps, actions, components, parts, or combinations thereof described in the specification, and should not be understood as preemptively excluding the presence or possibility of adding one or more other features, figures, steps, actions, components, parts, or combinations thereof.

[0029] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those generally understood by a person of ordinary skill in the art to which the examples belong. Terms that are the same as those defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not, ideally or excessively formally, unless expressly defined in this application.

[0030] Furthermore, when explaining with reference to the attached drawings, the same reference numerals will be used for the same components regardless of the reference numerals in the drawings, and redundant explanations related thereto will be omitted. When explaining embodiments, if it is determined that a specific explanation of related prior art may obscure the gist of the embodiment, such detailed explanation will be omitted.

[0031] The advantages and features of the present invention, and the methods for achieving them, should become clear with reference to the examples described below in detail, along with the accompanying drawings. However, the present invention may be embodied in a variety of different forms, not limited to the examples disclosed below, but provided so as to complete the disclosure of the present invention and to fully inform those with ordinary skill in the art to which the invention pertains, the present invention is defined solely by the claims.

[0032] In embodiments of the present invention, unless otherwise defined, all terms, including technical or scientific terms, used herein have the same meaning as those generally understood by a person of ordinary skill in the art to which the present invention pertains. Terms that are the same as those defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not ideally or excessively formally unless explicitly defined in embodiments of the present invention.

[0033] The shapes, sizes, ratios, angles, numbers, etc., disclosed in the drawings illustrating embodiments of the present invention are illustrative only, and the present invention is not limited to those depicted. Furthermore, in describing the present invention, if a specific explanation of related prior art is deemed likely to unnecessarily obscure the gist of the invention, such detailed explanation will be omitted. Where "includes," "has," "consists of," etc., as mentioned herein, other parts may be added, as long as "only" is not used. When a component is expressed singly, it includes cases where it includes multiple components unless otherwise explicitly stated.

[0034] When interpreting the constituent elements, they shall be interpreted as including a margin of error, even if not explicitly stated otherwise.

[0035] In descriptions of spatial relationships, for example, when the positional relationship between two parts is described using phrases like "on top of," "above," "below," or "next to," one or more other parts may be located between the two parts, as long as "immediately" or "directly" is not used.

[0036] The term "on" an element or layer includes all cases where another layer or other element is interposed immediately above or between other elements. Throughout the specification, the same reference numeral refers to the same component.

[0037] The positions and thicknesses of each component shown in the drawings are for illustrative purposes only, and the present invention is not necessarily limited to the sizes and thicknesses of the illustrated components.

[0038] The features of each of the various embodiments of the present invention can be combined or linked together in part or in whole, and a variety of technically diverse interoperability and drive are possible, as can be fully understood by those skilled in the art, and each embodiment may be implemented independently of the others or together in a related manner.

[0039] Figure 1 is a side view showing a functional shoe according to an embodiment of the present invention, and Figure 2 is a bottom view showing a functional shoe according to an embodiment of the present invention.

[0040] Referring to Figures 1 and 2, the functional shoe 1000 (hereinafter referred to as "functional shoe 1000"), which helps alleviate plantar fasciitis and reduces impact on the spine and knee joint using a windlass mechanism according to an embodiment of the present invention, does not restrict the instep of the foot when the wearer walks, allowing the instep to bend and enabling natural walking, and continuously supports the arch of the foot even while walking.

[0041] These functional shoes, model 1000, are designed to naturally guide the arch of the foot during walking.

[0042] This functional shoe 1000 includes an outsole 1 and an upper 2.

[0043] The outsole 1 is designed to support the sole of the foot and bend in response to the bending of the foot as the wearer walks, while also supporting the arch of the foot.

[0044] The outsole 1 may be made of an EVA material that is flexible and cushioning.

[0045] For example, the outsole 1 may be formed to a height of at least 4 cm. However, the height of the outsole 1 is not necessarily limited to this and can be changed to a variety of heights.

[0046] The outsole 1 includes an arch support portion 11.

[0047] The arch support portion 11 is formed to protrude from the upper surface of the outsole 1 and is formed as a bulging protruding structure that can support the arch of the wearer's foot.

[0048] The arch support portion 11 may have a curved shape in both the longitudinal and widthwise directions of the outsole 1.

[0049] Furthermore, the outsole 1 may further include a first bending guide groove 12 and a second bending guide groove 13. Multiple first bending guide grooves 12 are formed on the bottom surface of the outsole 1 along the length direction of the outsole 1, and guide the outsole 1 to bend when the wearer walks.

[0050] The second bending guide groove 13 is formed in multiple locations on the side surface of the outsole 1 along the length direction of the outsole 1 and is connected to the first bending guide groove 12, guiding the bending of the outsole 1 when the wearer walks.

[0051] In this case, the first bending guide groove 12 and the second bending guide groove 13 are each formed into a dome structure in which the width gradually decreases along the direction of the indentation from the outer surface of the outsole 1.

[0052] Here, the dome structure can be formed with a cross-sectional shape that is either arched or wedge-shaped.

[0053] The outsole 1 may further include cushioning grooves 14.

[0054] The cushioning groove 14 is formed as a recess in the bottom surface of the outsole 1 and can support and distribute the load transmitted through the foot.

[0055] Figure 3 is a cross-sectional view showing a buffer groove according to an embodiment of the present invention, and Figure 4 is a longitudinal cross-sectional view showing a buffer groove according to an embodiment of the present invention.

[0056] Referring to Figures 3 and 4, the cushioning groove 14 is recessed to a greater depth than the first bending guide groove 12 and the second bending guide groove 13, and can be formed into a dome structure in which the width gradually decreases along the direction of the recess from the outer surface of the outsole 1.

[0057] Here, the dome structure can be formed with a cross-sectional shape that is either arched or wedge-shaped.

[0058] Referring to Figures 2 and 4, the buffer groove 14 may include a first buffer groove 141 and a second buffer groove 142.

[0059] The first buffer groove 141 can support and distribute the load applied from the heel.

[0060] The first buffer groove 141 may have a wider width than the second buffer groove 142, but may be formed with a shorter length than the second buffer groove 142.

[0061] The second buffer groove 142 extends from the first buffer groove 141 in the longitudinal direction of the outsole 1 and can support and distribute the load applied from the arch of the foot.

[0062] The second buffer groove 142 may have a longer length than the first buffer groove 141, but may be formed with a narrower width than the first buffer groove 141.

[0063] Referring to Figure 2, the outsole 1 may further include water-repellent grooves 15.

[0064] The water film prevention groove 15 can be formed as a recess on the bottom surface of the outsole 1 to a shallower depth than the first bending guide groove 12 and the second bending guide groove 13.

[0065] This prevents the outsole 1 from slipping due to a water film. The water film prevention groove 15 may be positioned to intersect the first bending guide groove 12. This allows the water-repellent grooves 15 to be uniformly distributed across the entire bottom surface of the outsole 1.

[0066] Referring to Figures 3 and 4, the outsole 1 may further include a foot-receiving groove 16 recessed to a predetermined depth on the upper surface of the outsole 1 to accommodate a portion of the sole of the foot, and an edge support portion 17 that supports the edge of the heel that is accommodated in the foot-receiving groove 16.

[0067] The upper 2 is connected to the outsole 1 and can support the instep of the foot.

[0068] Upper 2 can be made of the same material as outsole 1.

[0069] However, the upper 2 is not necessarily limited to this and can be made from a variety of materials.

[0070] Furthermore, the upper 2 can be formed in a way that encloses a portion of the wearer's instep, or in a way that encloses the wearer's entire foot.

[0071] Furthermore, ventilation holes may be formed in the upper 2 as needed.

[0072] Furthermore, the upper 2 may be configured to support the back of the wearer's ankle or heel.

[0073] In this case, a portion of the upper 2 that supports the back of the wearer's ankle or heel may be made of an elastic material or may be configured to be adjustable in length.

[0074] In addition, the upper 2 may further include a removable inner layer.

[0075] However, Upper 2 is not necessarily limited to this form and can be changed to a variety of other forms.

[0076] The following describes a functional shoe 1000 (hereinafter referred to as "functional shoe 1000 according to another embodiment of the present invention") that helps alleviate plantar fasciitis and reduces impact on the spine and knee joint using a windlass mechanism according to another embodiment of the present invention.

[0077] Incidentally, for the sake of convenience of explanation, the same reference numerals used in the drawings used to describe the functional shoe 1000 in this functional shoe 1000 will be used for each component of the functional shoe 1000 according to other embodiments of the present invention, and the same or redundant explanations will be omitted.

[0078] Figure 5 is a plan view showing the cushioning pad according to an embodiment of the present invention attached to the outsole, Figure 6 is a schematic longitudinal cross-sectional view showing the support frame according to an embodiment of the present invention positioned inside the outsole, and Figure 7 is a transverse cross-sectional view showing the cushioning cushion attached to the support frame according to an embodiment of the present invention.

[0079] Referring to Figures 5 to 7, a functional shoe 1000 according to another embodiment of the present invention may further include a support frame 3, a first cushioning cushion 4, and a second cushioning cushion 5.

[0080] The support frame 3 is housed inside the outsole 1 and can support the arch support portion 11 and the edge support portion 17.

[0081] The support frame 3 may include a cover portion that supports the arch support portion 11 and a cup portion that supports the edge support portion 17.

[0082] For example, the support frame 3 may be made of a plastic material having a predetermined elastic force.

[0083] The first cushioning cushion 4 is housed inside the outsole 1 and supported by a portion of the support frame 3, and is capable of supporting and distributing the load applied from the heel.

[0084] The second cushioning cushion 4 is housed inside the outsole 1 and supported by the other part of the support frame 3, and is capable of supporting and distributing the load applied from the arch of the foot.

[0085] Figure 8 is a cross-sectional view showing a cushioning cushion according to an embodiment of the present invention.

[0086] Referring to Figure 8, the first buffer cushion 4 and the second buffer cushion 5 may each include an air pouch AP supported by a support frame 3 and filled with air, a spherical or elliptical buffer cell SC made of an elastic material housed inside the air pouch AP, and a valve unit VU connected to the air pouch AP and configured to inject and discharge air into the air pouch AP.

[0087] In this case, the cushioning cell SC may be made of a material that can be compressed when an external force is applied and then restored to its original state by elastic force. The valve unit VU may be exposed to the outside via the bottom surface of the outsole 1. For example, the valve unit VU may be configured to open and close an internal flow path, allowing for air discharge and maintenance of air pressure, but requiring the use of a separate pump (not shown) for air injection.

[0088] Referring to Figure 5, a functional shoe 1000 according to another embodiment of the present invention may further include a cushioning pad 6.

[0089] The cushioning pad 6 is made of silicone material and is housed inside the outsole 1, capable of supporting and distributing the load transmitted through the big toe of the foot when walking.

[0090] For example, a honeycomb structure may be formed on the lower surface of the cushioning pad 6.

[0091] Figure 9 is a schematic diagram showing the bonding structure of the upper and outsole according to an embodiment of the present invention.

[0092] Referring to Figure 9, the upper 2 can be detachably attached to the outsole 1.

[0093] This allows the user to selectively swap the upper 2 and the outsole 1.

[0094] In this configuration, the outsole 1 may be configured to selectively secure the upper 2.

[0095] More specifically, the outsole 1 may further include a recess groove 18A into which the end of the upper 2 is pressed, a nut member 18B housed inside the outsole 1, and an upper fixing bolt 18C that penetrates the outsole 1 and a portion of the upper 2 pressed into the recess groove 18A and is fastened to the nut member 18B. For example, the nut member 18B and the upper fixing bolt 18C may be made of plastic material.

[0096] Figure 10 is a schematic cross-sectional view showing a gap adjustment cushion according to an embodiment of the present invention.

[0097] Referring to Figure 10, a functional shoe 1000 according to another embodiment of the present invention may further include a gap-adjusting cushion 7.

[0098] The gap-adjusting cushion 7 is housed inside the upper 2 and can expand or contract to adjust the gap between the inner surface of the upper 2 and the instep of the foot, thereby allowing the upper 2 to fit snugly against the instep.

[0099] Furthermore, the gap-adjusting cushion 7 can adjust the gap between the inner surface of the upper 2 and the instep of the foot in stages.

[0100] More specifically, the gap adjustment cushion 7 may include a gap adjustment pouch 71 in which a first air cell 711 and a second air cell 712 separated from the first air cell 711 and positioned above the first air cell 711 are formed; a first gap adjustment valve unit 72 coupled to the gap adjustment pouch 71 and configured to inject and discharge air into the first air cell 711; and a second gap adjustment valve unit 73 coupled to the gap adjustment pouch 71 and configured to inject and discharge air into the second air cell 712.

[0101] For example, the first gap adjustment valve unit 72 and the second gap adjustment valve unit 73 may be configured to open and close the internal flow path, allowing for air discharge and maintenance of air pressure, but requiring the use of a separate pump (not shown) for air injection.

[0102] On the other hand, although not shown in the drawings, functional shoes 1000 according to other embodiments of the present invention may further include anti-slip caps (not shown).

[0103] The anti-slip cap is detachably attached to the bottom surface of the outsole 1, and its surface may be treated with an anti-slip coating.

[0104] The anti-slip cap may include a gripping portion, a support plate, a hook projection, and an anti-slip pad.

[0105] The attachment portion is formed in a bent shape and can be detachably connected to a cut groove formed on the bottom surface of the outsole 1.

[0106] More specifically, the engaging portion is inserted into a groove formed on the bottom surface of the outsole 1 and can be supported by engaging with the inside of the outsole 1.

[0107] In this case, the incision groove formed on the bottom surface of the outsole 1 can be formed in a shape corresponding to the gripping portion.

[0108] The attachment portion may consist of a vertical portion extending perpendicularly from the support plate and a horizontal portion extending horizontally from the vertical portion and being supported by the outsole 1.

[0109] Furthermore, the gripping portion may further include an auxiliary gripping portion that extends inclined upward or downward from the end of the horizontal portion and is supported by the inner surface of the outsole 1, so as not to separate from the outsole 1 during walking.

[0110] The support plate can be positioned between the mounting parts and supported on the bottom surface of the outsole 1.

[0111] In this case, the mounting portion may be positioned on the edge of the support plate.

[0112] The hook projection is formed to protrude from the inner surface of the support plate and can be inserted into the bottom surface of the outsole 1.

[0113] For example, the hook projection may include a support projection that protrudes linearly from the inner surface of the support plate, and a wedge-shaped projection that protrudes from the end of the support projection. In other words, the hook projection may be formed in a mushroom shape and inserted into the bottom surface of the outsole 1, and supported by engaging with the inner surface of the outsole 1.

[0114] The anti-slip pad can be detachably attached to the support plate and supported on the outer surface of the support plate.

[0115] One surface of the anti-slip pad may be coated with an anti-slip substance or may have anti-slip grooves formed on it. Alternatively, the anti-slip pad itself may be made of an anti-slip material.

[0116] Adhesive is applied to the rear surface of the anti-slip pad and it is bonded to the outer surface of the support plate, and fastening hooks may be provided at each corner of the anti-slip pad so that they can penetrate the support plate and be attached to the support plate.

[0117] As described above, according to the embodiment of the present invention, since bending guide grooves are formed on the bottom surface and the side surface of the outsole 1, the wearer's foot can be guided to the natural arch shape of the foot when walking, thereby minimizing the burden on plantar fasciitis.

[0118] Furthermore, since a dome-shaped cushioning groove 14 is formed on the bottom surface of the outsole 1 to distribute the load applied vertically from the wearer's heel and arch, pressure points are not concentrated on the heel and toes but are distributed across the entire sole of the foot, thereby minimizing the impact applied to the ankle joint, knee joint, and spine.

[0119] Although embodiments of the present invention have been described in more detail above with reference to the attached drawings, the present invention is not necessarily limited to these embodiments and can be modified and implemented in various ways without departing from the technical concept of the present invention. Therefore, the disclosed embodiments of the present invention are for illustrative purposes only, not to limit the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by these embodiments. Accordingly, the embodiments described above should be understood as illustrative in all respects and not limiting. The scope of protection of the present invention should be analyzed by the following claims, and all technical concepts within an equivalent scope should be analyzed as being included in the scope of rights of the present invention.

[0120] Therefore, other embodiments, other embodiments, and those equivalent to the claims described below also fall under the scope of the claims. [Explanation of Symbols]

[0121] 1000: Functional shoes 1: Outsole 11: Arch support section 12: 1st bend guide groove 13:Second bending guide groove 14:Buffer groove 141: 1st buffer groove 142:Second buffer groove 15:Water film prevention groove 16: Foot-retaining groove 17: Edge support part 18A: Closet groove 18B: Nut component 18C: Upper fixing bolt 2: Upper 3: Support Frame 4: First cushioning cushion 5: Second cushioning cushion AP: Air Pouch SC: Buffer cell VU: Valve Unit 6: Cushioning pad 7: Gap adjustment cushion 71: Gap adjustment pouch 711: Air cell 1 712: Second air cell 72: First gap adjustment valve unit 73: Second gap adjustment valve unit

Claims

[Claim 1] Functional shoes that allow the wearer to bend the instep of their foot when walking, The outsole supports the arch of the foot while bending in response to the bending of the wearer's foot as they walk, and It includes an upper that is connected to the outsole and supports the instep of the foot, The aforementioned outsole is The outsole has an arch support portion that protrudes from the upper surface and supports the arch of the wearer's foot, Multiple first bending guide grooves are formed on the bottom surface of the outsole along the length direction of the outsole, which guide the bending of the outsole when the wearer walks, The outsole includes a plurality of second bending guide grooves formed on the side surface of the outsole along the longitudinal direction of the outsole and connected to the first bending guide groove, which guide the bending of the outsole when the wearer walks, The first bending guide groove and the second bending guide groove are each formed with a dome structure in which the width gradually decreases along the direction of the recess from the outer surface of the outsole. The aforementioned outsole is The outsole further includes a recessed cushioning groove formed on the bottom surface of the outsole, which supports and distributes the load transmitted through the foot. The cushioning groove is recessed to a greater depth than the first bending guide groove and the second bending guide groove, and is formed in a dome structure in which the width gradually decreases along the direction of the recess from the outer surface of the outsole. The aforementioned buffer groove is A first cushioning groove that supports and distributes the load applied from the heel, It includes a second cushioning groove that extends from the first cushioning groove in the longitudinal direction of the outsole and supports and distributes the load applied from the arch of the foot, The first buffer groove has a width even greater than the second buffer groove. The second buffer groove has a longer length than the first buffer groove. The outsole further includes a foot-receiving groove formed in the upper surface of the outsole at a predetermined depth, which accommodates a portion of the sole of the foot, and an edge support portion which supports the edge of the heel that is accommodated in the foot-receiving groove. The outsole further includes a support frame housed inside the outsole and supporting the arch support and the edge support; a first cushioning cushion housed inside the outsole and supported by a portion of the support frame to support and distribute the load applied from the heel; and a second cushioning cushion housed inside the outsole and supported by another portion of the support frame to support and distribute the load applied from the arch of the foot, wherein the first cushioning cushion and the second cushioning cushion each include an air pouch supported by the support frame and filled with air, a spherical cushioning cell made of an elastic material housed inside the air pouch, and a valve unit coupled to the air pouch and configured to inject and discharge air into the air pouch. These functional shoes utilize a windlass mechanism to help alleviate plantar fasciitis and reduce impact on the spine and knee joints.

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