JP5374765B2 - Shoe sole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sole of a shoe with which arch formation and maintenance/improvement of steady footing function are achieved, and stimulation of foot bone formation and prevention of toe deformation are also achieved, by performing toe exercises like walking with load shift from heel to toe and barefoot walking. <P>SOLUTION: The sole 1 consisting of a heel portion 11, an arch portion 12, and a toe portion 13, is formed with an uphill slope 15 curving the bottom surface at the front part of the shoe sole upward toward the toe, with the base of the big toe to the small toe joints (b-f) as a starting point. Then, the bottom surface 31 is extended forward from the region behind the second to third toe joints (c-d) or the second to fourth toe joints (c-e), along the surface in contact with the ground of the heel portion 11 and the arch portion 12. Simultaneously, downward from the uphill slope 15, there is projectingly provided a protrusion 3 having a ridge portion 33 directed from a top 32 of the bottom surface toward the second toe. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to a shoe sole for footwear such as cloth shoes, leather shoes, and sandals, and more particularly to a shoe sole that promotes healthy growth of a foot. It is related with the sole which aimed at arch formation, toe-holding function maintenance improvement, toe-bone formation promotion, and toe deformation | transformation prevention by performing this exercise | movement.

In normal human walking with bare feet, the longitudinal arch along the longitudinal direction of the foot, that is, the longitudinal arch from the rear part of the rib to the head of the second metatarsal, and the lateral direction of the foot Two transverse arches, ie, a first transverse arch from the first wedge bone to the tip of the cubic bone, and a second arch composed of a ball portion from the head of the first metatarsal to the head of the fifth metatarsal It walks while absorbing the landing impact pressure due to weight addition.

In the walking process, the weight load is first applied to the back of the buttocks while rotating from the outside of the buttocks to the inside, and then forward from the back of the buttocks along the back of the buttocks in the longitudinal direction of the foot. The ball of the fifth finger is moved backward, that is, the back of the ball part of the first finger after the foot is strongly stepped on the back of the joint of the fifth metatarsal bone and the fifth proximal phalanx. That is, the first metatarsal and the first proximal phalanx are moved by stepping on the ground while rolling to the back surface of the joint, and then the first proximal phalanx and the first distal phalanx are warped. It is said that it walks while repeating the process of kicking the ground with the 1st to 5th fingers, especially the 1st, 2nd and 3rd fingers, and moving forward with a strong grasp of the ground with the back of the bone (first finger). It has been broken.

Therefore, in order to promote healthy growth of the foot, the toe gripping function is greatly involved in the improvement of physical ability such as promotion of the skeletal structure of the foot, walking with stability of static and dynamic posture, and maintenance and improvement of running ability It is important to improve the toe gripping function. For growing children, it is important to promote the development of arch formation, foot function and muscle strength by toe movement and walking with bare feet.

Therefore, with regard to the movement of the toes, in Japanese Patent Laid-Open No. 10-127303, the heel portion, the central portion, and the toe portion are formed, the heel portion and the central portion are formed as a flat bottom surface, and the central toe portion is formed. The toe part has a curved surface that curves upward as it goes from the side toward the tip of the shoe sole, forms a flat bottom surface that tapers down at the center, and further, the left and right bottom surfaces of the toe part have arc-shaped notch bottom surfaces. A shoe sole with a formed structure is disclosed.

According to this invention, when standing upright and stopping, it receives the total weight of the human body at the heel portion and the central portion, maintains a balanced and stable upright posture, and also feeds the shaft feet and feet carrying the weight forward during walking. The upper body is moved forward by alternating the left and right footing. The action point for feeding the upper body with the shaft foot is the five toes of the toe part, but since the arc-shaped notch bottoms are formed on the left and right bottoms of the toe part, the long thumb and ring finger are on the ground. The action force to kick out does not concentrate on the thumb and ring finger, so that the weight burden on the big toe and ring finger can be reduced during walking.

However, when the shoe sole is kicked as described above, the thumb and ring finger are in a state of floating with respect to the walking surface, so that the foot cannot be kicked firmly to the ground, and the weight burden can be reduced. As a result, the toe strength load is insufficient and the gripping force may be reduced, and further, walking and walking cannot be achieved.

Also, in Japanese Patent Application Laid-Open No. 11-206408, a convex portion narrower than the sole width is provided on the bottom of the shoe sole from the arch portion of the bottom surface to the toe, and a convex portion that matches the width of the shoe sole is provided on the bottom arch portion. There is disclosed a shoe sole having a shape provided on the shoe.

According to the present invention, the arch portion is pushed up by the convex portion provided on the arch, the heel is located in a low ground, and the thumb, index finger, middle finger, ring finger, and little finger are lowered by the thick convex portion toward the fingertip. To increase the movement of However, as in the above-mentioned JP-A-10-127303, the present shoe sole is also made thicker from the arch portion toward the toe portion and provided with a convex portion that is narrower than the width of the shoe sole, so that the upper portion from the arch portion to the fingertip portion is raised. Therefore, when kicking out, it is not supported against the ground and the thumb and ring finger are in a floating state, so it can not be kicked out firmly, and it can not walk and walk .

Further, in Japanese Patent Application Laid-Open No. 2005-323644, the vicinity of the first metatarsal bone head including the first protrusion and the second protrusion on both the inside and outside of the heel of the foot and forming the lateral arch of the forefoot portion of the foot And a fifth sole of the metatarsal in the vicinity of the head of the metatarsal bone, a shoe sole having a protrusion projecting from the bottom surface is disclosed, thereby suppressing a decrease in the lateral arch of the forefoot portion. It can prevent foot restraint and hallux valgus. However, this sole has only a function to support the lateral arch, so the movement of the center of gravity is unstable, so the toes can not move smoothly from the forward leaning posture, and it is possible to walk while walking. There is nothing.
JP-A-10-127303 JP-A-11-206408 JP-A-2005-323644

Accordingly, the present invention is intended to solve the above-mentioned conventional problems, and an object of the present invention is to provide a shoe sole that promotes healthy growth of the foot. Infant shoes and children's shoes are designed to perform arch formation, maintenance of toe gripping function, promotion of foot bone formation, and prevention of toe deformation by tilting walking and moving the toes close to bare feet. It is to provide a sole.

In order to achieve the above object, the invention according to claim 1 is directed to a sole comprising a heel part, a middle foot part, and a toe part. A toe-up surface curved upward toward the toe from the vicinity is formed, and the buttocks and midfoot from the region behind the second to third metatarsal joints or the second to fourth metatarsal joints And a protruding portion having a ridge extending in the horizontal direction along the ground contact surface on the lower surface side and extending from the top at the front of the bottom surface toward the second heel toe projecting downward from the toe-up surface It is characterized by being provided.

According to claim 1, in the forward leaning posture before the kicking-out stage, the lateral arch of the foot is supported from the protruding portion, the weight center of gravity is guided toward the tip end of the first to second toe, and the conventional bottom surface of the toe outer periphery is supported. Since the notch is not formed, in the next kick-out stage, the support of the arch is released and all the 1st to 5th toes can be firmly kicked directly to the ground and walked sideways It can be carried out.

The shoe sole according to claim 2, wherein the front end of the ridge portion of the projecting portion is substantially the same height as the toe-up surface and is near the second heel proximal phalanx of the foot, and is located at the rear end of the ridge portion. The thickness is gradually reduced toward the front end, and the vertical cross section is formed in an arc shape.

According to claim 2, since the shoe sole is provided with a ridge portion in which the tip of the projection portion is directed in the direction of the second fingertip, the weight shift is induced along the ridge portion, and smooth tilt walking is achieved. Also, since the vertical section is arc-shaped, it is always supported by the arc-shaped curved surface during the kicking operation, so that the left and right balance is maintained, and obstructions such as stones are avoided from being caught by the protrusions, and fall down It is prevented.

Shoe sole of claim 3, the height of the heel height parallel or toe portion with respect to the ground plane of the lower surface side of the heel portion and the metatarsal portion while the flat top surface of the over the toe portion of the heel portion It is characterized in that it is formed with a slightly higher inclination.

According to the third aspect, when the upper surface of the shoe sole and the ground contact surface are parallel, it is possible to stand in a normal posture standing upright substantially perpendicular to the ground contact surface. In addition, if the toes on the upper surface of the shoe sole are inclined slightly higher than the heel, the heel will fall against the sole of the foot so as to prevent slipping forward and keep the body vertical during walking, and the body will be against the ground. Therefore, the balance is adjusted so as to stand vertically and the posture is slightly forward tilted, so that the muscle strength of the lower limbs is increased by the kicking motion during walking, and the toe pressure can be further increased.

The shoe sole according to claim 4 comprises a shoe sole body of a lightweight elastic member, and a protrusion made of an elastic member having abrasion resistance from the sole body on the bottom side of the shoe sole body. .

According to the fourth aspect of the present invention, since the shoe sole is partially provided with the protruding portion made of an elastic member having wear resistance from the sole body, the weight of the shoe sole is reduced and wear of the protruding portion is prevented. Therefore, a shoe sole having excellent durability can be obtained.

According to a fifth aspect of the present invention, when the shoe sole is provided with a rising edge on the outer periphery of the upper surface and a cover is provided on the inner side of the rising edge, the tip of the toe on the upper surface of the shoe sole has a marginal space with the toes. The width from the middle foot to the heel is narrow enough to wrap the foot.

According to claim 5, since a space is provided in the toe portion of the shoe sole, a state close to a bare foot can be reproduced, it can be moved freely without obstruction of the toes, and the foot from the middle foot to the heel is the sole. Since it is held by, it is prevented that a foot slips forward at the time of a walk, and a feeling of fitting increases further.

In the shoe sole of the present invention, in the walking state, the sole is supported by the protrusion, so that the arch formation is promoted and the toes naturally bend downward and the toes naturally have a force to directly touch the grounding surface. The toe can be kicked and the toes can be gripped actively. Further, in the upright state, the projecting portion is in the same flat position as the ground contact surface, so that the supporting force does not act on the sole and is supported by the stepping portion and the heel portion, so that the upright posture stability is improved. The shoe sole according to the present invention has a space close to the toe with a space close to the bare foot, and is formed in a shape that wraps the hips, so that the toes can be moved freely while having a fit, Can promote healthy growth.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing the relationship between the shoe sole and the foot skeleton structure of the first embodiment. 2 is a side view of the shoe sole of the first embodiment, FIG. 3 is an AA sectional view of the shoe sole of the first embodiment, FIG. 4 is a BB sectional view of the first embodiment, FIG. 5 is a plan view of the first embodiment.

As shown in FIGS. 1 and 2, the shoe sole 1 according to the first embodiment of the present invention includes a heel part 11, a middle foot part 12, and a toe part 13. The shoe sole 1 according to the first embodiment of the present invention protrudes from a shoe sole body 2 having a toe portion curved upward as shown in FIGS. 2 to 4 and a toe lift surface 15 of the shoe sole body 2. A two-layer structure in which the portions 3 are laminated is formed. The example of the shoe sole 1 of the present invention is a shoe sole for children's shoes.

The sole body 2 of the shoe sole 1 has a position where the bottom of the toe begins to bend upward near the rear part of the first to fifth metatarsal joints (b-f), and a boundary line before and after the first to fifth middle foot. It is good also as a right angle or diagonal with respect to the longitudinal direction of a shoe sole from a hip joint (b-f) rear part. In this embodiment, the boundary line is a CC line as shown in FIG. 1, and is an oblique line connecting the middle part of the first metatarsal to the fifth metatarsal head. Further, the toe height H of the toe rising surface is 10 to 20 mm from the grounding surface 4.

The shoe sole body 2 is made of a lightweight elastic member such as foamed EVA or urethane foam as a material for reducing the impact force applied to the shoe sole. The hardness of the sole material is preferably 50 to 70 degrees in terms of C hardness (Asker (polymer instrument) SRIS0101) in order to relieve the impact force applied to the foot during walking. Further, the shoe sole 1 is formed such that the upper surface 14 of the heel part 11, the middle foot part 12 and the toe part 13 is formed flat and the upper surface 14 is parallel to the ground contact surface 4 between the heel part 11 and the middle foot part 12. It is formed with the tip of the toe inclined higher than the heel. The inclination angle may be slightly inclined with respect to the ground plane 4, and specifically, about 1 to 3 degrees is preferable. Further, the shoe sole 1 may be formed with a bent groove 5 on the upper surface 14 as necessary.

The upper surface 14 of the shoe sole 1 is provided with a rising edge 16 joined to a shoe hood (not shown) as shown in FIG. Further, as shown in FIG. 5, the shoe sole 1 is wide by providing a space W1 at the tip of the toe at the top of the toe, and the middle foot width W2 and the heel width W3 are in close contact with the heel from the middle foot of the foot. It is formed according to the width. For example, at the toe portion of the shoe sole, the side angle of the ball girth corresponding to the first and fifth heels is set to -5 to 5 degrees for the first heel and -5 to 8 degrees for the fifth heel. Thus, there is room in the toe portion in the shoe, and finger movement is not restricted.

As shown in FIG. 1, the protrusion 3 is formed between the second and third middle toe joints (cd) or the second to fourth middle toe joints (ce) and the middle part from the rear part. The bottom surface 31 is formed to extend forward along the ground contact surface 4 with the foot portion 12, and the ridge portion 33 is formed with the thickness gradually reduced from the top portion 32 of the bottom surface toward the second proximal phalanx g. At the same time, the vertical cross section is formed in an arc shape. The height h of the top portion 32 of the protruding portion 3 is formed to be about 1 mm to 3 mm from the toe rising surface 15.

The protruding portion 3 is formed of a bottom surface 31 that extends along the ground contact surface 4 of the heel portion 11 and the middle foot portion 12 on the toe-up surface 15 where the bottom surface of the shoe sole starts to rise upward toward the toe. In the upright state, the supporting force by the protrusions is not felt on the soles. The protrusion 3 has a ridge 33 that is gradually lowered from the top 32 of the bottom surface 31 that protrudes higher from the other ground contact surface toward the vicinity of the second proximal phalanx g of the toe. Therefore, the sole is smoothly supported in the kicked-out state.

In addition, the protrusion 3 is preferably made of a material having more wear resistance than the sole body 2 because it rubs against the ground contact surface during walking. As the material of the protrusion 3, a material having good durability, wear resistance, and slip resistance is used. For example, natural rubber, styrene butadiene rubber, isoprene rubber, polyurethane, synthetic rubber, or a mixture of two or more thereof is used. It is done. The protrusion 3 is preferably formed with a hardness of 50 to 80 degrees (spring hardness test A type hardness according to SRIS 0101). The shoe sole 1 of the present invention is completed by adhering the molded protrusion 3 to a recess formed on the lower surface of the toe of the shoe main body 2 with an adhesive.

If the projecting portion 3 of the shoe sole is formed with a bending groove 5 that traverses if necessary, the flexibility is improved and walking becomes easier. Further, the protrusion 3 may be integrally formed by connecting to another outer bottom member. Furthermore, an uneven design may be formed on the surface of the protrusion 3 as necessary to prevent slippage. As another example, the sole body and the protrusion may be formed of a single layer formed by integrally molding a foamed elastic member such as natural rubber, synthetic rubber, or synthetic resin. And the shoe sole of the Example of this invention equips the shoe sole upper surface side with a cover (not shown), and is used for shoes. Although the embodiment of the shoe sole of the present invention is a shoe sole for children's shoes, it can be applied to other infant shoes, women's shoes, men's shoes and the like.

The shoe sole of the present invention has a sole supported by the projecting portion 3 during walking, an arch is formed, and the toes of the first to fifth heels naturally bend downward to perform a gripping motion. The movement of the body weight was smoothly guided toward the tip of the first and second toes by the three ridges 33, and walking was achieved. The shoe sole of the present invention has a situation close to bare feet with a space at the toe, and is formed in a shape that wraps the buttocks and the treads. I was able to move my fingers freely and promoted healthy growth of my feet.

It is explanatory drawing which shows the relationship between the shoe sole of 1st Example, and the frame | skeleton structure of a leg | foot. It is a side view of the shoe sole of 1st Example. It is AA sectional drawing of the shoe sole of 1st Example. It is BB sectional drawing of the shoe sole of 1st Example. It is a top view of the sole of a 1st example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Shoe sole 11 ... Butt part 12 ... Middle foot part 13 ... Toe part 14 ... Upper surface 15 ... Toe tip raising surface 16 ... Standing edge 2 ... Sole body 3 ... Protruding part 31 ... Bottom 32 ... Top part 33 ... Ridge part 4 ... Ground plane 5 ... Bending groove
a… foot bone b… first metatarsal joint c… second metatarsal joint
d ... 3rd metatarsophalangeal joint e ... 4th metatarsophalangeal joint f ... 5th metatarsophalangeal joint
g ... 2nd heel proximal phalanx H ... toe height h ... protrusion height W1 ... space W2 ... non-stepped portion width W3 ... buttock width

Claims (5)

In the sole consisting of the heel, middle foot, and toe, a toe-up surface is formed that curves upward toward the toe starting from the rear bottom of the first 1-5 middle foot phalanx joint of the foot And the bottom surface in the horizontal direction forward along the ground contact surface on the lower surface side of the buttocks and the middle foot from the region behind the second to third middle toe joints or the second to fourth middle toe joints A shoe sole characterized in that a protruding portion including a ridge portion extending in the direction toward the second heel tip from the top portion in front of the bottom surface thereof is provided to extend downward from the toe-up surface. The projecting portion has a front end of the ridge portion that is substantially the same height as the toe-up surface and is near the second heel proximal phalanx of the foot, and has a thickness from the apex located at the rear end of the ridge portion toward the front end. The shoe sole according to claim 1, wherein the vertical cross section is formed in an arc shape. The sole is slightly higher than the height of the parallel or the toe portion with respect to the ground plane of the lower surface side of the heel portion and the metatarsal portion while the flat top surface of the over the toe portion of the heel portion and the height of the heel The shoe sole according to claim 1 or 2, wherein the shoe sole is inclined. The shoe sole includes a shoe sole body of a lightweight elastic member, and a protrusion made of an elastic member having wear resistance from the shoe sole body on a bottom surface side of the shoe sole body. The shoe sole according to any one of 3. The shoe sole is provided with a rising edge on the outer periphery of the upper surface, and when the heel is provided on the inner side of the rising edge, the tip of the toe on the upper surface of the shoe sole is widened so as to have a margin with the toes, and the middle foot The shoe sole according to any one of claims 1 to 4 , wherein the lateral width from the heel to the heel is narrow enough to wrap the foot.