Insoles and footwear fitted with said insoles

The insole design with specific toe pockets and tapered thickness allows even pressure distribution, promoting natural toe movement and stability, addressing uneven pressure distribution in existing insoles and footwear.

JP2026086304APending Publication Date: 2026-05-26内田 広子

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
内田 広子
Filing Date
2024-11-14
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing insoles and footwear do not effectively distribute pressure evenly across all five toes during walking or running, leading to instability and potential foot deformities.

Method used

The insole features a ball of the foot pocket for the big toe and a little toe pocket for the little toe, with varying thicknesses and shapes to accommodate toe movement, and a design that tapers thinner towards the toe tips, allowing for even pressure distribution and stable toe alignment.

Benefits of technology

The insole enables natural toe spreading and bending, stabilizes posture, and prevents foot deformities by evenly distributing pressure across all toes, enhancing walking and running stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides an insole that allows for even pressure distribution to the five toes when walking or running, and footwear equipped with the shape of the insole. [Solution] The insole of the present invention and the insole attached to the footwear are characterized in that they have a ball of the foot pocket on the big toe side that accommodates the ball of the foot and a little toe pocket on the little toe side that accommodates the ball of the foot, and the surface of the ball of the foot pocket of the insole that contacts the ball of the foot is formed to be flat.
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Description

Technical Field

[0001] The present invention relates to an insole for evenly using the forces of five toes when running, walking, and standing using the toes, and a footwear provided with the shape of the insole.

Background Art

[0002] Conventionally, there have been insoles for correcting foot deformities, footwear for flexing and extending toes, footwear for preventing floating toes, insoles for improving physical strength, etc. (For example, Patent Documents 1 to 4).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0004] The insole for correcting foot deformities described in Patent Document 1 and the footwear having an integral structure with the insole created five cutouts in the insole to reduce pain in the valgus hallux and varus little toe and achieve a healthy foot shape. Also, the footwear described in Patent Document 2 formed a space region in the concave portion to flex and extend the toes. Furthermore, the insole pad described in Patent Document 3 and the footwear equipped with it were formed such that the heel portion of the elastic member gradually thickened from the central portion toward the outer peripheral edge and the inner peripheral edge, and by making the thickness of the outer peripheral edge thicker than the inner peripheral edge, it induced load transfer in the direction of the first toe of the toes. Furthermore, the insole and footwear fitted with the insole described in Patent Document 4 have recessed portions on both sides of the sole of the insole, a protrusion formed approximately in the middle of the longitudinal direction of the sole, and the upper surface of the insole is formed to form a gentle arc, thereby allowing the toes to move open and close when walking.

[0005] The present invention relates to an insole that allows for even pressure to be applied to all five toes when walking or running, and footwear that has the shape of the insole attached to it. [Means for solving the problem]

[0006] The insole of the present invention as described in claim 1, and the insole to be attached to a shoe fitted with the insole, are characterized in that they have a ball of the foot pocket that accommodates the ball of the big toe on the big toe side of the foot and a little toe pocket that accommodates the ball of the little toe on the little toe side, and the surface of the ball of the foot pocket of the insole that contacts the ball of the big toe is formed to be flat.

[0007] The insole of the present invention as described in claim 2 and the surface of the little toe pocket of the footwear to which the insole is attached that contacts the little toe are characterized in that one side is thicker and the other side is thinner.

[0008] The insole of the present invention, as described in claim 3, is characterized in that the ball of the foot pocket is formed approximately around the metatarsophalangeal joint between the first proximal phalanx and the first metatarsal bone of the toe, and the little toe pocket is formed approximately around the metatarsophalangeal joint between the fifth proximal phalanx and the fifth metatarsal bone of the toe.

[0009] The portion of the insole corresponding to the toes as described in claim 4 of the present invention is characterized by gradually becoming thinner from approximately the area around the metatarsophalangeal joint towards the tips of each of the five toes.

[0010] The hypothenar pocket of the insole according to claim 5 of the present invention is characterized in that the outer edge of the hypothenar pocket can be formed thick and the inner edge can be formed thin.

[0011] Claim 6 is characterized in that the portion of the insole corresponding to the five toes on the big toe side is formed to be thinner than the portion on the little toe side. [Effects of the Invention]

[0011] The insole and footwear fitted with the insole described in claim 1 have the excellent effect of allowing the balls of the big toe and little toe to move freely, as they have a ball pocket on the big toe side that accommodates the ball of the big toe and a little toe pocket on the little toe side that accommodates the ball of the little toe.

[0012] The insole and footwear fitted with the insole described in claim 2 of the present invention have the excellent effect of suppressing the force that escapes outward from the side of the body during walking and standing, by having one side of the surface of the little toe pocket that contacts the little toe thicker and the other side thinner, thereby enabling stable walking and standing.

[0013] In the insole and footwear fitted with the insole described in claim 3, the ball of the foot pocket is formed approximately around the metatarsophalangeal joint between the first proximal phalanx and the first metatarsal bone of the toe, and the little toe pocket is formed approximately around the metatarsophalangeal joint between the fifth proximal phalanx and the fifth metatarsal bone of the toe, thereby allowing the five toes, including the ball of the foot, the little toe, and the second, third, and fourth toes, to spread easily. After the five toes have spread, they can be bent as if grasping an object, exhibiting an excellent effect.

[0014] The insole and footwear fitted with the insole described in claim 4 of the present invention exhibit the excellent effect of allowing the toes to bend easily, as the portion corresponding to the toes gradually thins from approximately the metatarsophalangeal joint towards the tips of each of the five toes.

[0015] The insole and footwear fitted with the insole described in claim 5 of the present invention have a thick outer edge and a thin inner edge at the little toe pocket, thereby exhibiting an excellent effect of suppressing the force that escapes outward from the side of the body when running, walking, or standing.

[0016] The insole and footwear fitted with the insole described in claim 6 of the present invention are formed so that the big toe side of the portion corresponding to the five toes is thinner than the little toe side, thereby exhibiting the excellent effect of distributing force evenly to the five toes.

Brief Description of the Drawings

[0017] [Figure 1] It is a front view of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 2] It is a rear view of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 3] It is a right side view of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 4] It is a left side view of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 5] It is a plan view of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 6] It is a bottom view of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 7] It shows the longitudinal direction A-A sectional line of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 8] It is a sectional view taken along the longitudinal direction A-A line of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 9] It shows the transverse direction B-B sectional line, C-C sectional line, D-D sectional line, and E-E sectional line of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 10] It is a sectional view taken along the B-B line of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 11] It is a sectional view taken along the C-C line of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 12] It is a sectional view taken along the D-D line of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 13] It is a sectional view taken along the E-E line of the insole of the present invention and the insole of the footwear with the insole attached. [Figure 14] It is an example of the bottom view of the insole of the present invention and the insole of the footwear with the insole attached, showing the F-F sectional line. [Figure 15] This is a cross-sectional view along the FF line of the insole of the present invention and footwear fitted with the insole. [Figure 16] This is a rear perspective view of a second embodiment of the insole of the present invention and the insole of footwear fitted with the insole. [Figure 17] This is a front perspective view of a second embodiment of the insole of the present invention and footwear fitted with the insole. [Figure 18] This is a plan view of a typical insole, showing the GG cross-section. [Figure 19] This is a general cross-sectional view of the GG line during the middle period. [Best Mode for Carrying Out the Invention]

[0018] The present invention will be described below based on the embodiments shown in the drawings, Figures 1 to 19. However, the following embodiments are described as examples of the structure of the insole and footwear fitted with the insole of the present invention, and are not limited to the figures in this description.

[0019] Figure 1 is a front view of the insole of the present invention and the insole attached to footwear fitted with the insole. It consists of an insole 1, an insole big toe side 2, an insole little toe side 3, and a portion 4 on which the sole of the foot rests, excluding the five toes. The insole little toe side 3 is formed to be thicker than the insole big toe side 2 with a gentle slope. This helps to suppress the outward force from the sides of the body when standing, walking, or running, and assists in maintaining a stable body axis, allowing you to walk straight without swaying.

[0020] Figure 2 is a rear view of the insole of the present invention and the insole 1 attached to footwear to which the insole is attached. It consists of insole 1, insole big toe side 2, and insole little toe side 3. Insole 1 is characterized by being thicker than insole 2 (big toe side) and insole 3 (little toe side).

[0021] Figure 3 is a right side view of the insole of the present invention and the insole 1 attached to footwear fitted with the insole. It consists of the insole 1, the big toe side of the insole 2, and the ball of the foot pocket 5. The thenar pocket 5 should be formed in a vertically elongated, roughly oval shape to allow the thenar eminence to fit securely, and the surface that contacts the thenar eminence should be flat.

[0022] Figure 4 is a left side view of the insole of the present invention and the insole 1 attached to footwear fitted with the insole. It consists of the insole 1, the little toe side of the insole 3, and the little toe pocket 6. The hypothenar pocket 6 is formed in a vertically elongated, roughly oval shape to accommodate the hypothenar eminence, with a gentle slope on the surface that contacts the hypothenar eminence, and the outer edge of the hypothenar pocket 6 is thicker than the inner edge.

[0023] Figure 5 is a plan view of the insole of the present invention and the insole 1 attached to footwear fitted with the insole. It consists of the insole 1, the big toe side of the insole 2, the little toe side of the insole 3, the parts 4, 4', and 4'' on which the sole of the foot rests other than the five toes, the ball of the foot pocket 5, the little toe pocket 6, the incline 7 formed in the ball of the foot pocket, the incline 8 formed in the little toe pocket, and the inclined part 9 on which the five toes rest. The areas 4, 4′, and 4″ on the sole of the foot, excluding the five toes, are characterized by being thicker than the thenar pocket 5 and the hypothenar pocket 6.

[0024] Figure 6 is a bottom view of the insole of the present invention and the insole 1 attached to footwear to which the insole is attached. It consists of a bottom surface 10.

[0025] Figure 7 shows the longitudinal cross-sectional line AA of the insole of the present invention and the insole 1 attached to footwear to which the insole is attached. It is composed of cross-sectional line AA.

[0026] Figure 8 is a cross-sectional view AA of the insole 1 of the footwear to which the insole of the present invention is attached. It consists of 9 sloping sections on which the five toes rest. The sloping portion 9 on which the five toes rest is shaped to become thinner towards the toes, with the tip on the toe side being flat. By gradually thinning the sloping portion 9 on which the five toes rest towards the tip on the toe side, it becomes easier to bend the toes downwards. In particular, it is important to ensure that all five toes point downwards when you are bracing yourself. When all five toes—the first, second, third, fourth, and fifth—point downwards, they can grip and spread with equal force while walking, which helps stabilize posture and improves and prevents floating toes.

[0027] Figure 9 shows the cross-sectional lines BB, CC, DD, and EE in the short direction of the insole 1 of the present invention and the insole 1 attached to footwear fitted with the insole. It consists of the parts 4, 4′, and 4″ on which the sole of the foot rests, excluding the five toes, and the cross-sectional lines BB, CC, DD, and EE.

[0028] Figure 10 is a cross-sectional view along line BB of the insole of the present invention and the insole 1 attached to footwear fitted with the insole. The toe portion is characterized by being thinner on the big toe side and thicker on the little toe side.

[0029] Figure 11 is a cross-sectional view along the CC line of the insole of the present invention and the insole 1 attached to footwear fitted with the insole. It is a cross-sectional view along the CC line at the position of the part 4 on the sole of the foot other than the five toes. The middle is thicker in the short direction, and both outer edges are thinned.

[0030] Figure 12 is a cross-sectional view along the DD line of the insole of the present invention and the insole 1 attached to footwear fitted with the insole. The ball of the foot pocket 5 is formed flat and thin, and the little toe pocket 6 is formed so that the inner edge is thin and gradually slopes to become thicker on the outer edge.

[0031] Figure 13 is a cross-sectional view along line EE of the insole of the present invention and the insole 1 attached to footwear fitted with the insole. The ball of the foot pocket 5 is formed flat, and the little toe pocket 6 is formed with a thin inner edge that gradually slopes and thickens towards the outer edge.

[0032] Figure 14 shows a second embodiment of the insole of the present invention and the bottom surface of the insole 1 attached to footwear to which the insole is attached. The heel vibration absorbing member 11 is composed of FF cross-section lines. This diagram shows a heel vibration absorber 11 attached to a foot that absorbs vibrations entering from the heel during walking.

[0033] Figure 15 is a cross-sectional view along the FF line of the insole of the present invention and the insole 1 attached to footwear to which the insole is attached. The heel vibration absorbing member 11 is formed to be thicker than the heel side thickness of the insole 1. However, it may be the same thickness as the insole 1.

[0034] Figure 16 is a rear perspective view of a second embodiment of the insole of the present invention and the insole attached to footwear fitted with the insole. As a second embodiment of insole 1, it is also possible to make the heel side cup-shaped.

[0035] Figure 17 is a front perspective view of a second embodiment of the insole of the present invention and the insole 1 attached to footwear to which the insole is attached.

[0036] Figure 18 is a plan view of a typical insole, showing the GG section lines. It is composed of GG section lines.

[0037] Figure 19 is a cross-sectional view of a typical insole. The cross-sectional line GG corresponds to the same position as the CC cross-sectional view of the insole 1 attached to the insole of the present invention and the footwear to which the insole is attached. Conventional insoles have the same thickness in all directions (top, bottom, left, and right), and cannot be expected to easily spread or bend the toes. On the other hand, the insole of the present invention and the insole 1 attached to footwear fitted with the insole are formed with the middle being thicker in the short direction and both outer edges being thinner, and the synergistic effect of having a big toe pocket 5 and a little toe pocket 6 allows for the natural spreading and bending of the five toes. [Industrial applicability]

[0038] For the elderly, we aim to enable them to walk straight ahead without wobbling by using their toes, and for children, we encourage standing and walking in a way that prevents floating toes by using their toes, providing insoles and footwear that allow people of all ages to walk quickly and easily. [Explanation of Symbols]

[0039] 1. Insole 2. Insole, big toe side 3. The little toe side of the insole 4, 4′, 4″ The part of the sole of the foot that rests on the foot, excluding the five toes. 5. Thenar pocket 6. Hypothenar pocket 7. The slope formed in the thenar pocket 8. The slope formed in the hypothenar pocket 9. The sloping part where the five toes rest. 10 Bottom 11 Heel vibration absorbing member AA section line BB cross section line CC section line DD section line EE section line GG section line FF section line

Claims

1. footwear An insole attached to footwear having a ball of the foot pocket that accommodates the ball of the foot on the big toe side and a little toe pocket that accommodates the ball of the little toe side, and the surface of the ball of the foot pocket that contacts the ball of the foot being formed flat, and footwear to which the insole is attached.

2. The insole and footwear fitted with the insole according to claim 1, characterized in that one side of the surface of the hypothenar pocket that contacts the hypothenar ball is thicker and the other side is thinner.

3. The insole according to claim 1, wherein the ball of the foot pocket formed in the insole is formed approximately around the metatarsophalangeal joint between the first proximal phalanx and the first metatarsal bone of the toe, and the little toe pocket is formed approximately around the metatarsophalangeal joint between the fifth proximal phalanx and the fifth metatarsal bone of the toe, and footwear fitted with the insole.

4. The insole and footwear fitted with the insole are characterized in that the portion of the insole corresponding to the toes gradually thins out from approximately the metatarsophalangeal joint towards the tips of each of the five toes, as described in claim 1.

5. The insole and footwear fitted with the insole are characterized in that the little toe pocket of the insole can be formed with a thick outer edge and a thin inner edge.

6. The insole according to claim 3, and footwear fitted with the insole, characterized in that the big toe side of the portion of the insole corresponding to the five toes is formed to be thinner than the little toe side.