JP7217846B2 - shoe insole - Google Patents

Description

The present invention relates to shoe insoles.

Conventionally, insoles for shoes have been provided with an arch-shaped insole for keeping the arch and the side of the foot in close contact with the sole, and a cubic bone supporting protrusion that supports the foot from the sole with the cubic bone as a fulcrum. There is known an insole that adjusts the skeletal balance of the foot by means of a cuboidal bone supporting convex portion and allows movement of the foot with the cubical bone as a fulcrum (see, for example, Patent Document 1).

Conventionally, insoles for shoes have been provided with an arch-shaped insole for keeping the arch and the side of the foot in close contact with the sole, and a cubic bone supporting protrusion that supports the foot from the sole with the cubic bone as a fulcrum. The cubic bone supporting convex portion adjusts the skeletal balance of the foot, and the convex portion supports the foot using the cubic bone as a fulcrum and allows the foot to move around the convex portion on the sole corresponding to the cubic bone. It has a shape that applies maximum stress and gradually decreases the stress acting on the sole of the foot from the part corresponding to the cuboid bone to the side edges including the part corresponding to the navicular bone, and also to the sole in the front and back direction. There is known an insole that allows a shape that gradually reduces acting stress (see, for example, Patent Document 2).

Conventionally, from the part corresponding to the cuboid bone to the part corresponding to the navicular bone, the thickness is gradually reduced by tilting downward toward the left and right side edges, and the thickness is gradually reduced from the part corresponding to the cuboid bone toward the front and back. A cubic bone supporting projection for supporting the cubic bone from the bottom of the foot, which is gradually reduced in thickness in the front, back, left, and right radial directions, is arranged so as to overlap the cubic bone supporting projection. By supporting the calcaneus tubercle via the long plantar ligament, the distortion of the calcaneocuboid joint with respect to the lateral longitudinal arch of the sole is suppressed while allowing the movement of the foot around the cuboid bone support protrusion. , a shoe insole characterized by having a calcaneus front supporting projection for supporting the calcaneus front from the sole. (See Patent Document 3, for example).

Conventionally, as a member interposed between the boot and the inner boot of a ski boot, a member having a ridgeline with respect to the center line of the sole and having a curved slope surface that is lowered in a concave shape on both sides in the width direction of the ski boot has been used. It is shown how the attachment facilitates side-to-side movement for skiing. (For example, Patent Document 4)

Conventionally, as a member interposed between the boot and the inner boot of a ski boot, it has a curved inclined surface that has a ridge line with respect to the center line of the sole and is lowered in a curved concave shape on both left and right sides in the width direction of the ski boot, A method of facilitating side-to-side movement for ski operation is shown by providing a narrower winter member in the toe or heel direction of the ski boot. (For example, Patent Document 5)

Patent No. 5263880 (JP, B2) Patent specification Patent No. 4733957 (JP, B2) Patent specification Patent No. 5498631 (JP, B2) Patent specification WO2017043658A1 patent specification Japanese Patent Application No. 2015-179830

The above-mentioned conventional insoles or inclusions of inner boots and ski boots are provided with curved sloped surfaces that are lowered in a curved concave shape on both sides in the width direction, with the aim of facilitating movement in the lateral direction. For this reason, no consideration has been given to changes in the movement of the sole weighted movement in the front-rear direction (hereinafter abbreviated as weighted movement). As a result, there is a delay in movement during weighted movement, requiring the user to perform extra body forward movement and muscle strength to move the center of gravity, which places a heavy burden on the body, especially on the muscles and joints.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a shoe insole that supports the lower leg in a well-balanced manner and allows smooth weighted movement.

Conventional insoles can ensure the stability of the sole of the foot. In addition, it was intended to balance the load on the sole of the foot by supporting the arch, the side of the foot, and the cubic bone supporting projections that support the cubic bones. However, it is desired to support the foot in a more balanced manner. In addition, since the focus is on supporting and stabilizing the foot, the weight transfer of the soles required for walking and exercise was not taken into consideration. However, no consideration has been given to the change in motion from the stable state of the load to the sole weighted movement (hereinafter abbreviated as weighted movement). As a result, there is a delay in movement during weighted movement, requiring the user to perform extra body forward movement and muscle strength to move the center of gravity, which places a heavy burden on the body, especially on the muscles and joints.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a shoe insole that supports the lower leg in a well-balanced manner and allows smooth weighted movement.

In order to achieve the above object, the insole of the present invention has a ridge on the line from the distal phalanx to the calcaneus of the second toe, and at least a part of the ridge on at least the sole side of the foot and/or the bottom side of the foot on either side of the inside or outside of the foot. By gradually decreasing the thickness of the side surface to reduce the load required for lateral load movement, lateral movement is assisted. Preferably, it is more effective to gradually decrease the bottom surface side.

On the other hand, the thickness of the bottom side of the insole gradually decreases from the line connecting the ball of the ball and the ball of the ball to the tip of the distal phalanx. The thickness of the bottom surface of the insole gradually decreases from the center of the insole to the calcaneus to assist in easiness of load transfer in the front-rear direction.

In addition, by gradually reducing the thickness of the insole bottom surface side of the cross section formed by the line connecting the ball of the mother and the ball of the child and the line connecting the center of the calcaneus from the second finger phalanx, the impact force from the sole to the top is absorbed. to reduce the load on the joints of the body, including the feet.

As an example of the above-mentioned method, a diamond shape is formed in a cross on the line connecting the part corresponding to the small bone of the ball of the thumb to the part corresponding to the sesamoid bone of the little finger and the line from the distal phalanx to the calcaneus of the second finger. The thickness of the insole bottom surface is reduced from the cross line in the lateral and front-rear directions toward the base of the rhombus, and the maximum protrusion height cross line is gradually reduced to form a recess in the cross line that supports the sole. By providing a concave portion at the bottom of the foot, the load moves from the landing point of the sole to the next movement site, for example, when landing on the heel during normal walking, the load moves toward the sesamoid bone at the tip of the foot, and then moves forward. In some cases, the load moves to the heel side for a short period of time, then moves to the sesamoid bone of the ball of the thumb and kicks the foot backward, thereby producing a movement that moves the body forward.

In order to transfer the load on the sole of the foot, the shape of the insole at the bottom of the heel has a hemispherical shape, and the part corresponding to the sesamoid bone of the ball of the thumb to the tip of the metatarsal bone on the side of the ball of the ball of the foot. By making the connecting line and the line from the sesamoid bone of the second finger to the side of the connecting heel of the talus and calcaneus into a diamond shape with respect to the center of intersection, the load can be easily transferred in any direction of the center of intersection. In addition, by providing a cross-shaped recess at the center of the intersection, the insole can be deformed in a manner suitable for load transfer, thereby stabilizing the load and facilitating load transfer.

With the above configuration, the line connecting the part corresponding to the sesamoid bone of the thumb ball to the part corresponding to the tip of the metatarsal bone on the proximal phalanx side of the ball of the ball, and from the distal phalanx of the second toe to the heel side of the calcaneus. A foot that forms a rhombus with the center of the cross on the line as the apex, and the thickness of the insole bottom surface is reduced from the cross line in the lateral direction and in the front-rear direction, and a dent is formed in the cross line that gradually decreases the maximum height of the cross line. A general insole bottom surface may be an independent member that is attached to the insole with a member having a recess in the member that supports the bottom.

In the above configuration, the cruciform formation part is on the line connecting the part corresponding to the sesamoid bone of the ball of the thumb to the part corresponding to the tip of the metatarsal bone on the side of the proximal phalanx of the ball of the foot, and from the distal phalanx of the second toe to the calcaneus. The cross forming part on the line to the connecting heel side has an area of 0.1 or more of the width of the foot with respect to the center of the cross line. It may also be formed in a removable inner sole.

In the above configuration, the sole (back) of the foot is improved by providing circular depressions in the sesamoid part of the ball of the thumb, the tip of the metatarsal bone on the side of the proximal phalanx of the ball of the foot, and the maximum protrusion of the calcaneus. Support can be strengthened. These three points may be provided separately from the diamond-shaped protrusions and cross-shaped recesses, because they function as base points when the foot starts kicking even if they are provided independently of the above configuration.

In the above configuration, on both sides of the cross from the part corresponding to the sesamoid bone of the ball of the thumb to the tip of the metatarsal bone on the side of the proximal phalanx of the ball of the foot and the heel side of the calcaneus from the second finger phalanx, A shoe insole characterized by having a recess formed in the sole contact part directly under the bone and having a recess in the support member on the side of the sole contact surface may be formed by a 3D printer.

In the above configuration, the cruciform formation part is on the line connecting the part corresponding to the sesamoid bone of the ball of the thumb to the part corresponding to the tip of the metatarsal bone on the proximal phalanx side of the ball of the ball, and the connection from the second finger distal phalanx to the calcaneus. A member independent of the insole having an area of 0.1 or more of the foot width foot length area with respect to the center of the cross line may be used for the radial cross forming part on the line to the heel side.

The member independent from the insole having an area of 0.1 or more of the foot width foot length area may be made of a carbon material such as carbon or graphite, or a resin material such as polyurethane and/or nylon or ABS.

In the above configuration, the cruciform formation part is on the line connecting the part corresponding to the sesamoid bone of the ball of the thumb to the part corresponding to the tip of the metatarsal bone on the side of the proximal phalanx of the ball of the foot, and from the distal phalanx of the second toe to the calcaneus. It is formed by a member independent from the insole having an area of 0.1 or more of the foot width and/or tone on the line to the connecting heel side, and a cross-shaped groove may be formed in the supporting and reinforcing member.

In the above configuration, on the line connecting the part corresponding to the sesamoid bone of the ball of the thumb to the part corresponding to the tip of the metatarsal bone on the side of the proximal phalanx of the ball of the foot, and from the distal phalanx of the second finger to the heel side of the calcaneus. The insole bottom thickness is formed in a crossed diamond shape on the line of , and the thickness of the insole bottom surface is gradually reduced from the previous cross line in the lateral and front-back direction, and the maximum protrusion height A structure in which a recess is provided in a member that holds the foot, a recess in the sesamoid bone and the sesamoid bone of the ball of the thumb, and a recess in the calcaneus may be formed together.

In the above configuration, the thin foot-shaped support member is provided with a line connecting a portion corresponding to the sesamoid bone of the ball of the thumb and a portion corresponding to the tip of the metatarsal bone on the proximal phalanx side of the ball of the foot, and the distal phalanx of the second toe. The thickness of the bottom surface of the insole is reduced in the lateral direction and the front-rear direction from the initial cross line to form a dent that gradually decreases the maximum protrusion height cross line. It may be formed as an additional member having a structure in which a recess is provided in a member that supports the sole formed in the anterior cruciate, and a recess in the sesamoid and sesamoid bones of the ball of the thumb and the calcaneus.

In the present invention, the cruciate forming part is formed on the line connecting the part corresponding to the sesamoid bone of the ball of the thumb to the part corresponding to the sesamoid bone, and on the line from the distal phalanx of the second finger to the heel side of the connection between the talus and the calcaneus. The cruciate formation has a base end placed in the cruciform towards the ball of the thumb and the ball of the ball, has an area of 0.1 or more foot width foot length with respect to the cruciate center, and is diamond-shaped or diamond-shaped and centered on the center line. The support and reinforcement member may be formed by forming a deformed rhombus that is shorter on the heel side than on the fingertip side.

In the present invention, the cruciate forming part is on the line connecting the part corresponding to the sesamoid bone of the ball of the thumb to the part corresponding to the tip of the metatarsal bone on the side of the proximal phalanx of the ball of the foot, and the connection from the distal phalanx to the calcaneus of the second toe. A radial cross forming part on a line to the heel side has an area of 0.1 or more foot width foot length with respect to the center of the cross line, with the bottom end placed on the cross line toward the ball of the thumb and the ball of the ball of the foot. Alternatively, the supporting reinforcing member may be a rhombus or a deformed rhombus in which the heel side of the central line is shorter than the fingertip side.

In the present invention, the cruciate forming part is on the line connecting the part corresponding to the sesamoid bone of the ball of the thumb to the part corresponding to the tip of the metatarsal bone on the side of the proximal phalanx of the ball of the foot, and the connection from the distal phalanx to the calcaneus of the second toe. The radial cross-forming portion on the line extending to the heel side may gradually decrease on the bottom side of the core material of the insole.

In the present invention, the cruciate forming part is on the line connecting the part corresponding to the sesamoid bone of the ball of the thumb to the part corresponding to the tip of the metatarsal bone on the side of the proximal phalanx of the ball of the foot, and the connection from the distal phalanx to the calcaneus of the second toe. Materials having different elastic moduli may be used for the radial cross forming portion on the line extending to the heel side.

In the present invention, the cruciate forming part is on the line connecting the part corresponding to the sesamoid bone of the ball of the thumb to the part corresponding to the tip of the metatarsal bone on the side of the proximal phalanx of the ball of the foot, and the connection from the distal phalanx to the calcaneus of the second toe. The radial cross forming portion may gradually decrease the sole contact portion of the insole 1 along the line to the heel side.

In the present invention, the bottom edge is placed in the crosshairs toward the ball of the thumb and the ball of the ball, has an area of 0.1 or more foot width foot length to the center of the crosshairs, and is centered in a diamond or rhombus. The supporting and reinforcing member may be a deformed rhombus that is shorter on the heel side of the line than on the fingertip side.

According to the present invention, the rhomboid three-dimensional structure of the bottom surface of the insole, which is the main requirement to support the user's weight while supporting the movement of the foot, plays an important role in weighted movement and rotation. By reducing the thickness of the sole on the ridge (cross-shaped) of the rhombic portion to form a recess, the stress generated by the load transfer can be alleviated, so that the load transfer becomes easier. In addition, since the sole (bottom) surface is supported by forming depressions in the ball of the thumb, the ball of the foot, and the portion of the calcaneus facing the insole, the entire sole (bottom) is stabilized.

FIG. 1 shows an insole according to an embodiment of the present invention, a lateral skeletal diagram of the right foot, a skeletal diagram of the sole of the foot, and a cross section of the ridge line from the toe to the heel of the insole. FIG. 2 is a perspective view showing an insole according to an embodiment of the invention. The ridge line connecting the second finger phalanx to the calcaneus is shown. Auxiliary line extending from the ridgeline to the lateral side of the foot indicates that the thickness of the bottom surface of the insole gradually decreases so that the thickness can be visually understood. It also shows that the thickness of the bottom surface of the insole gradually decreases from the line connecting the ball and the ball to the tip of the foot. Similarly, the supplementary line from the epiphyseal centerline of the calcaneus to the rear end of the heel to the ridgeline to both side surfaces of the foot indicates that the thickness of the insole bottom surface side is gradually reduced on the heel side as in the previous term. FIG. 3 is a cross-sectional view of a line connecting the ball of the thumb and the ball of the foot to show the cross section of the ridge connecting the second distal phalanx to the calcaneus. FIG. 4 is a cross-sectional view from the distal end of the proximal phalanx on the line connecting the second toe nail to the calcaneus to the heel side of the metatarsal. FIG. 5 is indicated by a ridge line connecting the second proximal phalanx to the center of the calcaneus and a line connecting the ball of the thumb and the ball of the foot. FIG. 10 is an example diagram showing tapering in the direction of the crosshairs; FIG. 6 is a bottom view of the insole. FIG. 7 shows the taper in the direction of the thumb and ball of the insole code 22 of supplementary line 30 of FIG. FIG. 8 is a diagram showing a gradual reduction of the sectional view in the direction of the supplementary line 31 of the second finger artefact calcaneus of the insole reference numeral 22 in FIG. FIG. 9 is a diagram showing the insole and the sole skeleton. FIG. 10 is a diagram in which the ball of the thumb, the ball of the foot, and the insole with gradually reduced thickness of the heel are superimposed on the sole skeleton. FIG. 11 is a tapering partial cross-sectional view of the thumb and ball of FIG. 10; FIG. 12 is a trihedral view showing a deformed rhombus member in which the deformed rhombus portion is detachable. FIG. 13 is a trihedral view showing an example of imparting the cross-shaped taper of the present invention to the deformed rhombic portion.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the lateral view of the right foot in the top row, the sole skeleton corresponding to the lateral part in the middle row, and the cross section of the line connecting the tip of the second finger phalanx of the insole 1 to the center of the calcaneus in the bottom row. be. In the cross-section of the bottom side insole 1 at the bottom, the thickness of the insole 1 gradually decreases from the ankle side of the middle speed bone toward the proximal phalanx, and further decreases gradually from the proximal phalanx toward the tip of the distal phalanx. is shown. In addition, the thickness of the bottom side of the insole 1 from the tip of the cuboid toe to the center of the fibula is gradually reduced, the thickness from the center of the fibula to the center of the calcaneus is gradually reduced, and the thickness of the insole is further reduced from the center of the calcaneus to the posterior epiphysis of the calcaneus. 1 indicates that the thickness on the bottom surface side is gradually reduced.

FIG. 2 is a perspective view showing the insole according to this embodiment from the bottom. The insole 1 has a shape following the inner contour of the shoe in plan view. By matching the shape of the outer edge with the shape of the inner edge of the shoe, the insole 1 is attached at a predetermined position in the shoe when inserted. Since the shape of the foot of a person who uses the insole 1 varies from person to person and is not constant, the overall size of the insole 1 is selected according to the size of the foot of the user. Also, the thickness of each part of the insole 1 can be matched to the shape of the foot peculiar to the user by changing the thickness of the interfering member and the core material. Versatility can be achieved by preparing multiple sizes and thicknesses. The insole 1 can be made versatile by preparing a plurality of thicknesses and a plurality of sizes.
As described above, the bottom surface of the insole has a ridgeline that connects the tip of the second finger distal phalanx to the center of the calcaneus, and the bottom surface side gradually tapers toward the medial-lateral surface of the foot.

In the insole 1, by deforming the shape of the core material for obtaining rigidity in accordance with the shape of the foot, it is possible to match the unevenness of the sole surface. In addition, a deformed rhombus is formed with ridgelines 23 and 24 of the insole 1, thereby facilitating weight transfer of the sole in the direction of weighted movement of the insole 1. Either prepare an insole with no unevenness in advance and attach the separate unevenness part Fig. 12 to the surface of the flat insole detachably, or make the insole into multiple layers and attach the unevenness part separately to the sole side to create a surface material. A similar effect can be obtained by forming unevenness on the surface.

FIG. 3 is a perspective view showing a cross-sectional view of a ridge line from the ball of the thumb to the ball of the foot of the insole according to the embodiment of FIG. FIG. 4 is a cross-sectional view of the ridge line from the second distal finger phalanx to the metatarsal bone of the insole according to the embodiment of FIG. 1 .
The insole 1 has a shape following the inner contour of the shoe in plan view. By matching the shape of the outer edge with the shape of the inner edge of the shoe, the insole 1 is attached at a predetermined position in the shoe when inserted. Since the shape of the foot of a person who uses the insole 1 varies from person to person and is not constant, the overall size of the insole 1 is selected according to the size of the foot of the user. Also, the thickness of each part of the insole 1 can be matched to the shape of the foot peculiar to the user by changing the thickness of the interfering member and the core material. Versatility can be achieved by preparing multiple sizes and thicknesses. The insole 1 can be made versatile by preparing several types of thicknesses and sizes.
In the insole 1, by deforming the shape of the core material for obtaining rigidity in accordance with the shape of the foot, it is possible to match the unevenness of the sole surface. In addition, a 10 o'clock lightening portion 23 (see also FIG. 5) is formed in a deformed rhombus with ridgelines 23 and 24 of the insole 1 to facilitate deformation of the insole 1 in the direction of load movement. In addition, a planar insole without unevenness is prepared in advance and a separate deformed rhombic member (Fig. 12) is detachably attached to the surface of the flat insole, or the insole is made of multiple layers and unevenness is formed on the sole side. A similar effect can be obtained by laminating the shape portions together to form unevenness on the surface material.

FIG. 6 shows the ridge line from the ball of the thumb to the ball of the foot of the insole according to the present embodiment in FIG. It is the figure shown from the bottom. This cross-shaped insole thickness gradual reduction can be formed at the bottom of the insole, by removing lightening at the corresponding part of the core material, at the top of the insole, or by making the material of the corresponding part more elastic than the other parts. A similar effect can be obtained by using a material with a reduced .

The insole 1 can easily move the load on the sole in the front, rear, left, and right directions by forming the deformed rhombus described above. Furthermore, as shown in FIG. 6, by gradually decreasing 22 in a cross shape, by providing a rhombus-shaped gradual decrease in load transfer on the bottom surface of the insole, the stress is relieved by deformation of the insole and the load is further increased. The amount of change in force required for movement is reduced. This effect can also be obtained by attaching only the deformed rhombic portion shown in FIG. 13 to the surface of the flat insole as a separate member from the insole so as to be detachable. FIG. 7 is a cross-sectional view of the cross-shaped taper from the ball of the thumb to the ball of the foot. Similarly, FIG. 8 is a cross-sectional view of the cross-shaped taper from the second phalanx to the metatarsal.

FIG. 9 is a diagram schematically showing the relationship between the outer edge of the insole 1 and the skeleton of the foot. For the above-mentioned cross-shaped gradual decrease, the cutting width is appropriately adjusted with 32 and 33 on the bottom surface of the insole as the center line. The ball of the ball is the portion of the first sesamoid and the ball of the ball is the tip of the foot of the fifth finger metatarsal.
The sole skeleton in this example is the right sole, but it goes without saying that the sole skeleton is mirror-symmetrical. The appropriate width and length of the cruciform taper is from the ball of the ball and ball of the ball and from the tip of the second distal phalanx to the calcaneal end of the metatarsal. However, depending on the user's level of sports proficiency, the physical strength and muscle strength of a healthy person, the handicapped and the injured in the rehabilitation process, easy-to-cut materials such as cork and resin materials that can adjust the ease of movement as appropriate are recommended. If you adjust it individually, you will get even better results.

When it is realized by a deformed rhombus, it is preferable to form the maximum bottom surface with the vertices between the terminal phalanx and the seasonal bone, the heel side end of the metatarsal bone, and the first to fifth sesamoid bones. It is preferable that the detachable deformed diamond-shaped members shown in FIGS. 12 and 13 also have the same bottom surface.

FIG. 10 shows the bottom surface of the sole of the foot together with the core material of the ball of the ball, the ball of the ball, and the calcaneus, where the core material is removed. FIG. 11 is a diagram showing a cross-section of the circular depressions of the core material of the ball and ball, and the circular depression of the calcaneus also reduces the thickness of the core like the ball and ball. This reduction in thickness stabilizes the point of force when the load is transferred, so that the effect of promoting the transfer of the sole load can be obtained.

A schematic three-view drawing of the modified rhombus is shown in FIG. Install on the insole so that the tip of the deformed rhombus (Fig. It is possible to obtain the same effect as the modified rhomboid part integrated with the insole by placing the opposite apex of the base of the base on the line connecting the tip of the second finger distal phalanx and the calcaneus. From the apex of the insole to the center of the maximum height of the rhombus, the recess is deformed when the load is transferred to the front, back, left, and right, as in the insole integrated type, thereby relieving the stress and further facilitating the load transfer.

The shoe insole of the present invention is intended to improve standing posture and walking and exercise functions, and is suitable not only for shoes for daily use, but also for sports shoes such as skiing and soccer that require functionality. , medical shoes intended for treatment and rehabilitation, training shoes intended for health promotion, and various other shoes.

Effect of the invention

According to the present invention, the rhomboid three-dimensional structure of the bottom surface of the insole, which is the main requirement to support the user's weight while supporting the movement of the foot, plays an important role in weighted movement and rotation. By reducing the thickness of the sole on the ridge (cross-shaped) of the rhombic portion to form a depression, the stress generated by the load transfer can be alleviated, so the load transfer becomes easier. In addition, since the sole (bottom) surface is supported by forming depressions in the ball of the thumb, the ball of the foot, and the portion of the calcaneus facing the insole, the entire sole (bottom) is stabilized.

Specific examples of the present invention are shown below. The insole 1 of FIG. 2 is a perspective view from the insole surface. A line connecting the tip of the second finger distal phalanx to the center of the calcaneus is a ridgeline, and the thickness of the insole bottom surface is gradually reduced from the ridgeline in the width direction of the foot, that is, inward and outward. The maximum thickness of the insole bottom member varies depending on the user's muscle strength and athletic ability. The thickness of the inner and outer end surfaces of the insole is about 1 mm, but it is sufficient if the insole material can maintain an appropriate elastic strength.

On the other hand, in the front-rear direction of the foot, the thickness of the insole gradually decreases from the line connecting the ball of the foot and the ball of the foot toward the tip of the distal phalanx, with the toe joint shown in FIG. The thickness of the bottom member of the insole in the picture at the tip of the distal phalanx is about 1 mm, but it is sufficient if the proper male strength can be maintained depending on the insole material.

Cork is preferably used for the insole bottom member, but is not limited to this. In addition, the core material of the insole is often made of a resin plate material such as nylon or urethane that is easy to process in order to match the shape of the foot. However, it is also possible to use a carbon sheet pasted together, a hard rubber-based material, and shaping using a 3D printer.

A foamed resin sheet is generally used as a material for the sole of the foot. However, depending on the athlete's level, it is also possible to select a material that can transmit the sole load directly to the shoe by using a high-strength material.

The gradual decrease in the insole thickness of the two cross lines on the line connecting the ball of the mother ball and the ball of the ball and the line connecting the tip of the tip of the foot of the second toe and the center of the heel epiphysis is the impact force when the sole of the foot hits the ground. Therefore, the amount of gradual reduction is changed according to the type of exercise and the user's muscle strength or exercise ability, such as the bottom or core material of the insole, the foam material for the sole of the insole, etc. It is suitable for general healthy subjects to use from the ball of the mother and child to the ball of the child and from the tip of the tip of the second finger proximal phalanx to the rear end of the foot of the medium speed bone. A sufficient effect can be obtained with a gradually decreasing thickness of about several millimeters.

In the present invention, in order to increase the load stability of the sole, a method for improving the body's ability to maintain balance is provided by providing a gradual decrease of about 10 mm in diameter in the portions corresponding to the ball of the foot, the ball of the ball and the tip of the calcaneus. showing.

The same effect as the load can also be obtained by using a detachable member having a rhombic bottom surface and a rectangular shape in the height direction, as shown in FIG.

By gradually decreasing each ridge line shown in FIG. 13 on a detachable member with a diamond-shaped bottom and a square height direction, the thickness of the corresponding area of the insole including the bottom of the insole is gradually decreased, as well as the drizzle at the time of landing is alleviated. effective.

INDUSTRIAL APPLICABILITY The present invention is not limited to use in sports, and can improve safety and convenience by reducing the walking burden on the user as a support means for improving walking exercise ability recovery due to accidents or aging. In addition, since the burden on the ankles, knees, and hip joints can be reduced in order to promote appropriate weight transfer on the soles of healthy people when walking, an injury prevention effect can be obtained.

1 For shoes (insole projection)
2 part (toe side ridgeline)
3 site (rhombus forming part)
4 parts (heels)
5 For shoes (insole) [bottom view]
10 Insole seed member including core material and sole cushioning material 11 Insole bottom layer member generally formed of cork 12 Core material 13 Cushioning material 14 Sole surface material 20 Rhombic ridge connecting the sesamoid bone to the sesamoid bone of the thumb ball 21 Ridge line of deformed rhombus on the calcaneus side from the second phalangeal phalanx 22 Ridge line of deformed rhombus connecting the thumb to the ball of the toe gradually decreasing in thickness 23 Ridge line thickness of the deformed rhombus connecting the second phalanx to the calcaneus 24 The ridge line of the deformed rhombus connecting the second finger base phalanx to the calcaneus 30 The supplementary line 31 showing the ridge line of the deformed rhombus connecting the ball of the thumb to the calcaneus The ridge line of the deformed rhombus connecting the second finger joint to the calcaneus Supplementary line 32 showing the general site where the ball of the thumb (sesamoid) contacts 33 General site where the ball of the thumb (tip of the proximal phalanx) contacts 34 Supplementary line 35 showing the ridgeline on the side of the ball of the thumb Supplementary line 36 showing the ridgeline from the distal phalanx to the calcaneus side Line 40 showing omission after the cross-section Section 41 where the insole thickness gradually decreases on the ball of the thumb Section 42 where the insole thickness gradually decreases on the ball of the foot 42 Decreasing site

Claims (1)

The bottom side is inclined upward so that the thickness gradually decreases from the left to right, centering on the line connecting the distal phalanx of the second finger and the center of the calcaneus, and the thickness from the sesamoid bone of the first finger to the fifth finger. The line connecting the tips of the metatarsal bones is the center, and the thickness gradually decreases back and forth. An insole for shoes, characterized by having a cross-shaped concave portion along a line connecting tips of metatarsal bones of fingers.

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