Body temperature responsive insole for tarsal bone correction and footwear using the same

Abstract

A core material with a three-point support structure and tarsal bone correction shape is provided under the body temperature responsive polymer layer to achieve "responsiveness to the soles of each user's feet" and "improved tarsal bone correction effect." [Solution] Insole 1 has a substantially flat core material 3 beneath a body temperature responsive polymer layer 2. The body temperature responsive polymer layer 2 softens and deforms to fit the shape of the sole of the foot due to the user's body temperature, and core material 3 has a three-point support structure 4 and a tarsal bone correction shape 5. Furthermore, core material 3 is made of nylon 6 resin, and body temperature responsive polymer layer 2 has a non-slip portion 6, body temperature responsive polymer layer 2 returns to its initial shape after use, an elastic buffer layer 7 is provided between body temperature responsive polymer layer 2 and core material 3, core material 3 has a pressure dispersion shape, core material 3 has a vibration detection structure, and insole 1 does not have to have a built-in sensor, drive circuit, or drive power source. Insole 1 may also be used in footwear.

Description

[Technical Field]

[0001] The present invention relates to an insole that is attached to the sole of a shoe or the like, and relates to an insole having a thermoresponsive polymer layer and a core material, and footwear using this insole. [Background technology]

[0002] BACKGROUND ART Insoles have been proposed that support the arch shape of the sole of the foot and correct the position of the tarsal bones (see Patent Document 1). This insole is fitted inside footwear and supports the soles of the feet of the user of the footwear, and comprises a main body portion arranged from the heel to the toes of the user, a first protrusion formed on the surface side of the main body portion and supporting the medial longitudinal arch of the user from the sole of the foot, and a second protrusion formed on the surface side of the main body portion and supporting the lateral longitudinal arch of the user from the sole of the foot, and in the tip region of the main body portion, the back side of the main body portion is formed as a flat surface, and the thickness of the toe side of the main body portion is formed thicker than the thickness of the heel side of the main body portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2025-004669 Summary of the Invention [Problem to be solved by the invention]

[0004] As described in paragraphs 0059 and 0062, the insole described in Patent Document 1 is said to have a three-point support structure and a shape that returns (corrects) the tarsal bones to their normal positions, thereby maintaining posture and preventing falls. However, the insole of Patent Document 1 has a problem in that since the shape of the sole of the foot varies from person to person, it may not fit a predetermined insole shape, and the user may easily feel localized pressure or discomfort. Furthermore, there is also the problem that the corrective position cannot be accurately maintained due to slippage between the surface of the insole and the sole of the foot, reducing the corrective effect.

[0005] In view of these points, the present invention aims to provide an insole or footwear that can achieve "responsiveness to the soles of each user's feet" and "improved tarsal bone correction effect" by providing a core material with a three-point support structure and a tarsal bone correction shape below a body temperature responsive polymer layer. [Means for solving the problem]

[0006] The insole 1 according to the present invention is an insole having a body temperature responsive polymer layer and a substantially flat core material provided thereunder, and the body temperature responsive polymer layer is , messenger The core material softens due to the user's body temperature and deforms to a shape corresponding to the sole of the user's foot. The aforementioned The shoe has a three-point support structure that supports the user's foot at three points and a tarsal bone correction shape that corrects the position of the tarsal bones in the user's foot. A groove portion extending substantially along the front-rear direction is formed on the lower surface of the core material, and two groove portions are provided, and the two groove portions are formed substantially parallel to each other on the lower surface of the core material. The first feature is that

[0007] others, Insole 1 teeth The core material is nylon 6 resin, and the body temperature responsive polymer layer has an anti-slip portion that prevents the sole of the user's foot from slipping on the upper surface of the body temperature responsive polymer layer. It's okay .

[0008] others, Insole 1 teeth The shape of the body temperature responsive polymer layer is restored to the initial shape of the body temperature responsive polymer layer after use by the user. It's okay to .

[0009] The first insole 1 according to the present invention 2 The feature of the second insole is that, in addition to the first feature, the insole has an elastic buffer layer between the body temperature responsive polymer layer and the core material. A third feature of the insole 1 according to the present invention is that, in addition to the first feature, the thickness of the core material becomes thinner as it goes towards the periphery. A fourth feature of the insole 1 according to the present invention is that, in addition to the first feature, the material of the core is harder than the material of the body temperature responsive polymer layer. A fifth feature of the insole 1 of the present invention is that, in addition to the first feature described above, the thickness of the body temperature responsive polymer layer is 0.1 mm or more and 3.0 mm or less, and the thickness of the core material is 0.1 mm or more and 3.0 mm or less, and the thickness of the body temperature responsive polymer layer is thicker than the thickness of the core material.

[0010] others, Insole 1 teeth The shape of the core material is also a pressure dispersion shape that distributes pressure from the sole of the user's foot. It's okay .

[0011] others, Insole 1 teeth The shape of the core material is a vibration detection structure that can vibrate when the user is wearing footwear using the insole, and the vibration pattern can be detected by a sensor device built into a mobile terminal used by the user, and the insole does not incorporate any of a sensor that detects the vibration pattern of the core material, a circuit that drives the sensor, or a power source that drives the sensor and the circuit. It's okay if .

[0012] A first feature of the footwear according to the present invention is that it uses the insole described above.

[0013] Due to these features, a core material 3 equipped with a three-point support structure 4 and a tarsal bone correction shape 5 is provided below the body temperature responsive polymer layer 2, which softens and deforms to fit the shape of the sole of the foot due to the user's body temperature. This allows the body temperature responsive polymer layer 2 to flexibly deform to fit the shape of the sole of the foot, which varies greatly from person to person, unlike Patent Document 1 (ensuring "responsiveness to each user's sole"), making it less likely for the user to feel localized pressure or discomfort and achieving high comfort. At the same time, the deformation of the body temperature responsive polymer layer 2 prevents slippage between the surface (top surface) of the insole 1 and the sole of the foot, improving the correction effect for the user's tarsal bones ("improved tarsal bone correction effect"). Such an insole 1 can also be said to be a "body temperature responsive tarsal bone correction insole."

[0014] Furthermore, by using nylon 6 resin as the material for the core material 3 and forming an anti-slip portion 6 on the body temperature responsive polymer layer 2, the corrected position of the user's tarsal bones is stably maintained, reducing shifting and slipping while the user is walking. Furthermore, since the body temperature responsive polymer layer 2 returns to its initial shape after use, it can be said that the "responsiveness to the soles of each user's feet" and "improved tarsal bone correction effect" can be maintained stably for a long period of time, and the same insole 1 can be used by many users.

[0015] Furthermore, by providing the elastic buffer layer 7 between the body temperature responsive polymer layer 2 and the core material 3, and by having the core material 3 have a pressure dispersion shape, it can be said that localized pressure and fatigue are reduced. In addition, by configuring the core material 3 to have a vibration detection structure that can vibrate when the user is wearing footwear using the insole 1 and whose vibration pattern can be detected by a sensor device built into the user's mobile terminal, and by not incorporating a sensor, drive circuit, or drive power source into the insole 1, it becomes possible to measure and record biometric information such as the user's number of steps, stride length, amount of vertical movement, walking speed, amount of active kinetic energy per day, and distance traveled based on the detected vibration pattern of the core material 3, and it also becomes possible to determine deterioration of the insole 1 itself and predict its lifespan. It should be noted that the footwear using the insole 1 described above can also be said to be "footwear for tarsal bone correction with body temperature responsiveness." [Effects of the Invention]

[0016] The insoles and footwear of the present invention can achieve "responsiveness to the soles of each user's feet" and "improved tarsal bone correction effect" by providing a core material with a three-point support structure and a tarsal bone correction shape below the body temperature responsive polymer layer. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic side cross-sectional view showing an insole according to the present invention when not in use (when the user's foot is not placed on the body temperature responsive polymer layer). [Figure 2] FIG. 1 is a schematic side cross-sectional view showing the sole shape adaptation state when the insole is in use (when the user's foot is placed on the body temperature responsive polymer layer). [Figure 3] 1 is a photograph, substituted for a drawing, showing a planar perspective view of a core material in an insole. [Figure 4] 1 is a photograph showing a perspective bottom view of a core material in an insole. [Figure 5] 1 is a photograph showing a plan view of a core material in an insole. [Figure 6] 1 is a photograph showing a side view of a core material in an insole. [Figure 7] 1 is a photograph showing a front view of a core material in an insole. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. <Insole 1> Figure 1~ 7 As shown in FIG. 1, the insole 1 according to the present invention includes a body temperature responsive polymer layer 2, which will be described later, and a core material 3, which will also be described later.

[0019] Furthermore, Figure 1 7 indicates the right foot attitude R 。

[0020] The insole 1 may also have an elastic buffer layer 7, which will be described later. The insole 1 does not necessarily have to incorporate any of a sensor that detects the vibration pattern of the core material 3 (described later), a circuit that drives this sensor, and a power source that drives the sensor and circuit. Such an insole 1 may be used in footwear, and may be removably attached or fixed to the bottom of footwear such as shoes or sandals, whether existing or new, and used as an insole, etc. Furthermore, the life (service life) of the insole 1 is not particularly limited, but may be, for example, two years or more.

[0021] <Body temperature responsive polymer layer 2> As shown in FIGS. 1 and 2, the body temperature responsive polymer layer 2 is a layer provided above a core material 3, which will be described later. The body temperature responsive polymer layer 2 softens due to the body temperature of the insole 1 or the user of the footwear, and changes shape to fit the sole of the user's foot.

[0022] The body temperature responsive polymer layer 2 may also have an anti-slip portion 6, which will be described later. The shape of the upper surface of the body temperature responsive polymer layer 2 when not in use (so-called initial shape) may be substantially flat.

[0023] In addition, the initial shape of the upper surface of the body temperature responsive polymer layer 2 is determined by the user's Foot The three cuneiform bone, boat-shaped bone, cubic bones Distance bone The parts corresponding to the positions of the six bones are: Foot thumb ball, little finger sphere reach Beauty heel of the foot In this case, when the insole 1 is used, the body temperature responsive polymer layer 2 also On the feet It can be said that this corrects the position of the tarsal bones.

[0024] The shape of the body temperature responsive polymer layer 2 may be restored to its initial shape after use by the user. This means that when the user is using the product (during use), the upper surface (top) of the body temperature responsive polymer layer 2 is deformed to a shape that corresponds to the sole of the user's foot, as shown in Figure 2, but after the user has used the product (which can also be said to be after a predetermined time has passed), the upper surface of the body temperature responsive polymer layer 2 may return to its initial shape, such as the approximately flat state described above, as shown in Figure 1.

[0025] The above-mentioned predetermined time can be said to be the restoration time from use by the user until the body temperature responsive polymer layer 2 restores to its initial shape, and this restoration time is not particularly limited, but may be, for example, 0.1 seconds or more and 300.0 seconds or less. More specifically, the lower limit may be 0.1 seconds or more, preferably 1.0 seconds or more, and more preferably 3.0 seconds or more, and the upper limit may be 300.0 seconds or less, preferably 100 seconds or less, and more preferably 10.0 seconds or less. Each lower limit of this restoration time may be combined with any of the upper limits.

[0026] The thickness of the body temperature responsive polymer layer 2 is not particularly limited, but may be, for example, 0.1 mm or more and 3.0 mm or less, and more specifically, the lower limit may be 0.1 mm or more, preferably 0.3 mm or more, and more preferably 0.5 mm or more, and the upper limit may be 3.0 mm or less, preferably 2.5 mm or less, and more preferably 2.0 mm or less. Each lower limit may be combined with any of the upper limits. The thickness of the body temperature responsive polymer layer 2 may be generally uniform overall, or may vary in part (for example, becoming thinner or thicker towards the periphery).

[0027] The material of such a body temperature responsive polymer layer 2 is not particularly limited, but may be a polyolefin resin such as polyethylene (PE) or polypropylene (PP) (for example, HUMOFIT (registered trademark) manufactured by Mitsui Chemicals, Inc.), or other materials equivalent to the polyolefin resins mentioned above, such as polyurethane (PU) resin or ethylene vinyl acetate (EVA) resin.

[0028] In addition, the body temperature responsive polymer layer 2 has a periphery that is feet It may have an upwardly protruding portion (so-called peripheral convex portion) 2a to fit it in a surrounding manner. (See Figure 2) However, on the other hand, it is not necessary to have this peripheral convex portion 2a. (See Figure 1) . Furthermore, a recess may be formed on the lower surface of the body temperature responsive polymer layer 2 in accordance with the size, thickness and shape of the core material 3 described below.

[0029] <Core material 3> Figure 1~ 7 As shown in FIG. 1, the core material 3 is a member provided below the body temperature responsive polymer layer 2, and has a substantially flat plate shape. As will be described later, this approximately flat core material 3 may have relatively raised portions (portions located at the top) or recessed portions (portions located at the bottom), and may also be said to be partially curved in the vertical direction.

[0030] The thickness of the core material 3 as a plate-like material is not particularly limited, but may be, for example, 0.1 mm or more and 3.0 mm or less, and more specifically, the lower limit may be 0.1 mm or more, preferably 0.3 mm or more, and more preferably 0.5 mm or more, and the upper limit may be 3.0 mm or less, preferably 2.5 mm or less, and more preferably 2.0 mm or less. Note that each lower limit value of the thickness may be combined with any of the upper limits. Furthermore, the thickness of the core material 3 as a plate-shaped material may be approximately uniform overall, or may vary in parts (for example, becoming thinner or thicker towards the periphery, etc.).

[0031] Such a core material 3 has a three-point support structure 4, which will be described later, and a tarsal bone correction shape 5, which will be described later. The shape of the core material 3 may also be said to be a pressure dispersion shape or a vibration detection structure.

[0032] Grooves 8 extending substantially along the front-to-rear direction may be formed on the lower surface (back surface) of the core material 3, and the number of these grooves 8 may be one or more (such as two). It can also be said that these grooves 8 reinforce the rigidity of the core material 3 in the direction substantially along the front-to-rear direction, and can flexibly absorb deflections in the direction substantially along the left-to-right direction of the core material 3. In addition, the bottom surface or top surface (surface) of the core material 3 may have one or more approximately circular depressions (for example, remnants of holes used to inject resin and remove air from the mold during molding), or predetermined characters (such as a company name) may be engraved in a convex or concave shape. Furthermore, the core material 3 may be fitted into a recess formed on the lower surface of the body temperature responsive polymer layer 2 and adhered thereto.

[0033] The material of such core material 3 is not particularly limited, and may be, for example, nylon 6 (polyamide) resin, or other engineering plastics such as nylon 66 (polyamide) resin, thermoplastic polyurethane (TPU) resin, acrylonitrile butadiene styrene copolymer (ABS) resin, polyacetal (POM) resin, polycarbonate (PC) resin, modified polyphenylene ether (m-PPE) resin, polybutylene terephthalate (PBT) resin, etc. That is, the material of the core material 3 may be harder than the material of the body temperature responsive polymer layer 2 (in other words, the body temperature responsive polymer layer 2 may be softer than the core material 3).

[0034] In this case, the user puts the insole 1 feet When placed on the foot, the soft thermoresponsive polymer layer 2 in contact with the sole of the foot is depressed by the weight of the foot, but the core material 3 is harder and therefore hardly deforms. As a result, the body temperature responsive polymer layer 2 deforms substantially along the shape of the upper surface of the core material 3, i.e., the upward curved shape, and conforms to the user's Foot The sole of the foot is forced to conform to the curved shape.

[0035] Here, "harder" can also be said to be harder or have a higher hardness, and as a parameter indicating hardness, for example, Type C durometer hardness may be used, or other parameters may be used. Conversely, "softer" can also be said to be softer or have a lower hardness. The "Type C durometer hardness" is the hardness measured using an Asker rubber hardness tester Type C manufactured by Kobunshi Keiki Co., Ltd., as described in Appendix 2 of JIS-K-7312:1996.

[0036] <Three-point support structure 4 (pressure dispersion shape)> Figure 1~7 As shown in FIG. 1, the three-point support structure 4 is a structure provided on the core material 3 described above, and feet It is a structure that is supported at three points. Here, the three points supported by the three-point support structure 4 are the user's On the feet The thumb, which will be described later, ball, little finger sphere reach Beauty With heels a do.

[0037] The three-point support structure 4 is explained in detail. Foot thumb ball, little finger sphere reach Beauty On the heel This means that the corresponding position has a shape that protrudes downward (a downward convex shape), a shape that curves downward (a downward curved shape), or a structure that is harder than the surrounding area (positions other than the corresponding position described above). With the three-point support structure 4 described above, when using the insole 1, Foot thumb ball, little finger sphere reach Beauty On the heel It can be said that pressure is concentrated.

[0038] On the other hand, the three-point support structure 4 allows My legs When contacting the ground, the pressure of the user's weight Foot thumb ball, little finger sphere reach Beauty On the heel It can also be said that the pressure of the user's weight is distributed to corresponding positions, making it easier for the user to maintain balance than if the pressure were supported at a single point. The three-point support structure 4 can be said to be shown as having a downwardly convex shape in FIGS. 1 and 2, and as having a downwardly curved shape in FIGS.

[0039] <Tarsal bone correction shape 5> Figure 1~ 7 As shown in FIG. 1, the tarsal bone correcting shape 5 is a shape provided in the core material 3 described above, and corrects the position of the tarsal bones in the user's foot. To explain the tarsal bone correction shape 5 in detail, on the upper surface side of the core material 3, Foot The three cuneiform bone, boat-shaped bone, cubic bones Distance bone The parts that correspond to the positions of a total of six bones (these six bones are also called the tarsal bones) when in use are: Foot thumb ball, little finger sphere reach Beauty heel of the foot It has a shape that is located above (that is, curved or raised upward) the part that corresponds to the part.

[0040] This tarsal bone correction shape 5 allows the user to On the feet It can be said that this corrects the position of the tarsal bones. Moreover, such a tarsal bone correction shape 5 can also be said to be a tarsal bone correction portion.

[0041] Here, if a user of flat feet wears footwear using the insole 1, The legs Since the arch is flat and lacking in depth, feet When placed on the body temperature responsive polymer layer 2, Foot Three wedges bones and boat-shaped bones and cubic bones and distance Bones This means that the foot is forced to curve upward. Foot People with a healthy skeletal structure Foot It becomes like a skeletal structure, making it easier to maintain balance (balance effect). Furthermore, if a person with flat feet continues to wear footwear using the insole 1, Foot People with a healthy skeletal structure Foot It can also be said that it is expected that the skeletal structure will be corrected (i.e., flat feet will no longer occur) (corrective effect). Furthermore, even if you are not a flat-footed person, Foot Three wedges bones and boat-shaped bones and cubic bones and distance bones It can also be said that even if any bone is distorted compared to the skeletal structure of a healthy user, the distortion can be corrected to normal by using footwear that includes the insole 1.

[0042] <Non-slip part 6> As shown in Figures 1 and 2, the anti-slip portion 6 is a part that prevents slippage between the sole of the user's foot and the upper surface of the above-mentioned body temperature responsive polymer layer 2, and can also be said to be provided on the body temperature responsive polymer layer 2. That is, as shown in FIG. 1, the anti-slip portion 6 is not formed when the foot is not in use, but as shown in FIG. 2, when the foot is in use, the body temperature responsive polymer layer 2 softens due to the body temperature of the user and deforms into a shape corresponding to the sole of the user's foot (the upper surface of the body temperature responsive polymer layer 2 becomes concave), and this concave is the anti-slip portion 6, and in particular, the concave is formed to allow the user's foot to slide smoothly. Foot Step on the toe side Heel side The step can also be said to be the anti-slip portion 6.

[0043] <Elastic buffer layer 7> As shown in Figures 1 and 2, the elastic buffer layer 7 is a layer provided between the above-mentioned body temperature responsive polymer layer 2 and the above-mentioned core material 3, and it can be said that the elastic buffer layer 7 buffers the pressure (pressure) from the soles of the user's feet. The elastic buffer layer 7 may cover all or part of the upper surface of the core material 3 , or may extend beyond the core material 3 and cover the lower surface of the body temperature responsive polymer layer 2 as well. The material of the elastic buffer layer 7 is not particularly limited, but may be, for example, a foamed synthetic resin (synthetic resin foam) such as polyurethane foam (PUF), polystyrene foam (PSF), polyethylene foam (PEF), or polypropylene foam (PPF).

[0044] <Vibration detection structure of core material 3> Figure 1~ 7 As shown in the figure, the vibration detection structure of the core material 3 means a structure in which the core material 3 itself can vibrate during use (i.e., when the user is wearing footwear using the insole 1), and the pattern of this vibration can be detected by a sensor device built into the mobile terminal used by the user. The vibration detection structure of the core material 3 may be such that the entire or part of the core material 3 is bent (flexed), and the bent part can generate vibration.

[0045] This flexible portion may be configured so that there is a space between the body temperature responsive polymer layer 2 and the core material 3 within the above-mentioned recess on the underside of the body temperature responsive polymer layer 2, allowing the flexible portion to vibrate. Furthermore, even if there is no space between the body temperature responsive polymer layer 2 and the core material 3, the body temperature responsive polymer layer 2, which is softer than the core material 3, may follow the vibration of the core material 3 and cause the body temperature responsive polymer layer 2 itself to vibrate. In this case, since the body temperature responsive polymer layer 2 is made of a material softer than the core material 3, its corrective function is inferior to that of the core material 3, but it can also be said that the two work together to fulfill the corrective function.

[0046] <Other> The present invention is not limited to the above-described embodiment. The individual components or the overall structure, shape, dimensions, etc. of the insole 1, footwear, etc. can be modified as appropriate within the spirit of the present invention. The material of the core 3 may be other than nylon 6 resin, the shape of the core 3 may not be a pressure dispersion shape, and the core 3 may not have a vibration detection structure.

[0047] The body temperature responsive polymer layer 2 does not have to have the anti-slip portion 6, and the shape of the body temperature responsive polymer layer 2 does not have to be restored to its initial shape after use by the user. The insole 1 may not have an elastic buffer layer 7, or may incorporate at least one of a sensor that detects the vibration pattern of the core material 3, a circuit that drives the sensor, and a power source that drives the sensor and the circuit.

[0048] The core material 3 may have all or part of its underside covered by a covering portion, and this covering portion may be made of a material softer than the core material 3, or conversely, may be made of a harder material or a material with anti-slip properties. Furthermore, this covering portion may extend beyond the core material 3 and cover the underside of the body temperature responsive polymer layer 2 as well. The shape of the lower surface of the core material 3 may be substantially flat. In this case, the core material 3 may have an upwardly curved portion. Foot Three wedges bones and boat-shaped bones and cubic bones and distance bone It is okay if the areas corresponding to a total of six bones are thicker than the surrounding areas.

[0049] In addition, the core material 3 is Foot Three wedges bones and boat-shaped bones and cubic bones and distance bone A room (space, cavity, not shown) in which a GNSS (Global Navigation Satellite System) part and a battery are arranged may be provided in the positions (sites) corresponding to a total of six bones. In this case, the lower surface of the core material 3 is Foot Three wedges bones and boat-shaped bones and cubic bones and distance bone The areas corresponding to a total of six bones may be formed flat, and since the core material 3 is thick in these areas, it can be said that it is easy to provide the above-mentioned chambers in these areas. In the room provided in the core material 3, the ceiling (upper surface) side, Foot Three wedges bones and boat-shaped bones and cubic bones and distance bone Pressure sensors or strain sensors (not shown) may be installed at positions corresponding to a total of six bones, respectively, to detect the pressure on the ceiling and deformation of the ceiling, and the output from these pressure sensors and strain sensors may be transmitted to the outside.

[0050] An external control unit (not shown) receives the output from each sensor and Foot Three wedges bones and boat-shaped bones and cubic bones and distance bone The distortion of the position of a total of six bones may be determined. In addition, a control unit may be provided inside the chamber of the core material 3 that counts the number of steps taken by the user based on the output from the pressure sensor or strain sensor described above and transmits the count to the outside, or the output from the pressure sensor or strain sensor may be used by another external control unit (not shown) to determine the distortion in the positions of a total of six bones and count the number of steps.

[0051] In addition, an openable / closable door (not shown) may be provided on the ceiling side of the above-mentioned room, and another openable / closable door (not shown) may be provided above that door at the corresponding position of the body temperature responsive polymer layer 2.By opening these two doors, it can be said that maintenance of pressure sensors, strain sensors, GNSS components, batteries, etc. within the room can be performed. Furthermore, the upper surface of the core material 3 on the ceiling side of the room is Foot Three wedges bones and boat-shaped bones and cubic bones and distance bone The positions corresponding to the total of six bones may be curved upward, and it can be said that it is easier to detect the distortion of the total of six bones using a pressure sensor or a distortion sensor than when the top surface of the core material 3 is approximately flat.

[0052] Furthermore, the user Foot Three wedges bones and boat-shaped bones and cubic bones and distance bone Of the total six bones, only the distorted bones will have strong or weak pressure or distortion detected by the pressure sensor or distortion sensor, and the distortion of the user's bones can be determined. Foot In this case, the pressure and distortion are usually uniform. And, in order to make the pressure and distortion uniform, the core material 3 is Foot Three wedges bones and boat-shaped bones and cubic bones and distance bone The areas corresponding to a total of six bones are: Foot thumb ball, little finger sphere reach Beauty On the heelThe upper surface of the core material 3 may be formed so as to be located at a suitable position above the corresponding portion, thereby preventing unhealthy users from feeling discomfort. Foot It can be said that distortions of six bones can be detected. The user's foot (foot part) ) The skeleton of the casing is explained in detail below.

[0053] <User's Foot skeleton > messenger User's The legs ,heel bone, distance bone, boat-shaped bone, cubic bone, 1st to 3rd cuneiform bone, 1st to 5th metatarsals bone, 1st to 5th base nodes bone, 2nd to 5th middle section bone, 1st to 5th final section Bones It has been shown that the Among these, the heel bone, distance bone, boat-shaped bone, cubic bones and the first to third cuneiform bone The six bones are collectively called the tarsals.

[0054] Also, the first to fifth metatarsals bone The five bones are collectively called the metatarsals. bone, 2nd to 5th middle section bones and the first to fifth sections bone The 14 bones are collectively called the phalanges. Here, the distance Bones , Foot It has the function of correcting overpronation and oversupination, and the heel Bones It has the function of correcting valgus and varus, and Bones It has the function of maintaining the medial arch and is cubic. Bones It has the function of stabilizing the transverse arch and has three wedge-shaped Bones It has the function of adjusting the proper alignment of the forefoot.

[0055] In addition, five metatarsals Bones Helps form the longitudinal and transverse arches, with five base segments BonesTogether with the toes, they absorb shock while walking and generate the force to push off the ground. Bones Allows smooth movement of the toes, My legs It distributes the pressure of the body weight when in contact with the ground and maintains balance. Bones It serves as the point of contact with the ground when walking, efficiently transmits force, maintains posture stability, and is responsible for flexing and extending the toes, making it adaptable to walking movements. still, Foot thumb The ball is First metatarsal bone Located at the front, the little finger The ball is Fifth metatarsal bone Located at the front.

[0056] Furthermore, heel of the foot Heel bone Located at this heel Bones It is the largest bone that forms the base of the foot and can be said to be the foundation that supports everyday movements such as standing, walking, and running. 。 [Industrial Applicability]

[0057] The insoles and footwear of the present invention can be used by users of all ages and genders for a variety of purposes, including construction sites, welfare, medical, and everyday life, and can be used in any type of footwear, such as safety shoes, men's shoes, women's shoes, sports shoes, sneakers, and sandals, to improve posture, reduce fatigue, and prevent falls. [Explanation of symbols]

[0058] 1 insole 2. Thermoresponsive polymer layer 3 Core material 4 Three-point support structure 5 Tarsal correction shape 6 Non-slip part 7 Elastic buffer layer

Claims

1. An insole having a body temperature responsive polymer layer and a substantially flat core material provided thereunder, the body temperature responsive polymer layer softens due to the body temperature of the user and deforms to a shape corresponding to the sole of the user's foot; the core material has a three-point support structure that supports the user's foot at three points and a tarsal bone correction shape that corrects the position of the tarsal bones in the user's foot, A groove portion extending substantially along the front-rear direction is formed on the lower surface of the core material, Two grooves are provided, An insole for tarsal bone correction, characterized in that the two grooves are formed approximately parallel to each other on the underside of the core material.

2. The insole for tarsal bone correction according to claim 1, characterized in that the insole has an elastic buffer layer between the body temperature responsive polymer layer and the core material.

3. An insole for tarsal bone correction as described in Claim 1, characterized in that the thickness of the core material becomes thinner as it goes towards the periphery.

4. An insole for tarsal bone correction as described in Claim 1, characterized in that the material of the core material is harder than the material of the body temperature responsive polymer layer.

5. The thickness of the body temperature responsive polymer layer is 0.1 mm or more and 3.0 mm or less, The thickness of the core material is 0.1 mm or more and 3.0 mm or less, The insole for tarsal bone correction according to claim 1, wherein the thickness of the thermoresponsive polymer layer is greater than the thickness of the core material.

6. Footwear comprising the insole according to any one of claims 1 to 5.

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