JP4916586B1 - shoes - Google Patents

Abstract

[PROBLEMS] To prevent the excessive application of excessive load to ankles, surrounding joints, bones, tendons, etc. while being stable during walking and running and applying sufficient force to the ground. In addition, the present invention aims to provide a shoe that prevents the occurrence of a failure in the foot and that can fully perform the function of the foot.
SOLUTION: A heel cup portion 3 having both side wall portions 4 and a rear wall portion 5 is provided inside a shoe heel portion 2 of a shoe 1 so as to restrict movement of an ankle portion other than dorsiflexion and bottom flexion. The bottom portion 6 of the shoe 1 is provided with a bending portion 9 having a thinner thickness than the others from the vicinity of the base of the fifth metatarsal 7 of the foot to the portion corresponding to the vicinity of the front of the first metatarsal 8; The outer shape of the shoelace part 2 is formed into a substantially hemispherical part 10 that is convex downward.
[Selection] Figure 1

Description

  The present invention relates to an improvement in shoes, which is stable during walking and running and can apply sufficient force to the ground, and can be applied to the ankle, surrounding joints, bones, tendons, etc. The present invention relates to a shoe having a structure capable of preventing a failure / failure caused by an excessive load and sufficiently exhibiting a foot function.

  Many conventional shoes have a flat shape in the shoe heel part and the outer bottom surface of the shoe hoe part. This is different from the rounded toe shape. Therefore, when walking or running, the rounded toe portion tends to cause an internal movement (see FIG. 14) or an external movement (see FIG. 15). As a result, the foot is unstable in the shoe, and the above-described ankle, surrounding joints, etc. are likely to fail or fail, and it is difficult to apply sufficient force to the foot.

  In addition, in the case where the outer bottom surface of the shoelace part is flat, when the ankle is tilted laterally for some reason, the pressure applied from the lower leg axis is not in the straight direction of the rib (for example, FIG. 2 of Patent Document 3 and FIG. 34 of Japanese Patent No. 3321340 (Japanese Patent Laid-Open No. 2002-101905)], excessive rotation and excessive load are applied to the ankle and surrounding bone and tendon, Prone to failure.

Furthermore, when the outer bottom surface of the shoe heel is flat, even when walking or running on sloping ground, etc., the entire bottom surface of the shoe tends to follow the inclination. Since the bone does not go straight, it tends to cause an ankle and surrounding joint failure / injury.
In order to cope with the above problems, shoes having several shapes and structures have been proposed.

This is related to a method for manufacturing a shoe, which is described as follows: “In the shoe garment, that is, the foot pocket is formed by a curve that fits well with the natural curved surfaces of the instep and sole, The shape of the shoe is shown in FIGS. 1 to 7A.

This is a shoe cushion device, and “an elastic body having both side walls, a bottom wall, and a rear wall that form at least a recess corresponding to the ribs of the foot, and an outer surface of each wall. Is composed of a shock absorbing portion that is formed so as to be put into a footwear and that protrudes from the body integrally with the body at least in a region corresponding to the weight support portion of the toe of the foot, The shock absorber is made of an elastic material, and the footwear is worn around the wearer's heel so as to absorb the shock force received by the foot due to distortion and deformation of the shock absorber. It ’s something that can be put inside.

Japanese Patent No. 3321340 (Japanese Patent Laid-Open No. 2002-101905)) This is a shoe having a shoe sole formed in accordance with the shape of the foot, and “the wearer's foot (27) is Shoe heel region in a position substantially corresponding to the position of the heel when inside, a shoe in a position substantially corresponding to the front position of the foot when the wearer's foot (27) is inside the shoe A sole front region, a shoe middle region in a position substantially corresponding to the region between the foot heel and the front of the foot when the wearer's foot (27) is inside the shoe, The shoe sole matches the natural shape of the foot, in particular the side of the foot, and has a constant thickness in the cross-section in the left-right vertical plane (see FIG. 43), so that the foot is as if it is bare foot ”That allows for the natural interaction with the ground, while protecting and buffering the foot” It has been described. “When the shoe sole (28) is upright and unloaded, it has a concave portion on the outer surface (30) of the shoe sole (28) as seen in the vertical cross section in the left-right direction”. The details are shown in FIGS. 3 to 44B.

  In addition, as related to the above-mentioned Patent Document 3, there are, for example, Japanese Patent Nos. 3049299, 3060033, and 3293471, etc. as Japanese patents, and US Patents include US5317819, US5554429, US66629376B1, There are US66868470B2, US6810606B1, US6877254B2, US7093379B2, and the like.

  a) The thing of the said patent document 1 is a curve which fits the natural curved surface of an instep and a sole well, so that a foot putting part is a contact | adherence and holding | maintenance with a foot | leg, and comfort is also favorable. However, since the outer bottom surface of the heel of the shoe has a flat shape or a shape close to it, for example, when a force in an oblique direction is applied to the shoe bottom surface when walking or running on an inclined ground surface, The shoes are deformed as the bottom follows the slope. In addition, since the pressure applied from the lower leg axis is not in the straight direction of the rib, if the outer bottom surface of the heel and the heel of the shoe remains flat, the bones and tendons of the ankle and the peripheral part are still over-rotated. An excessive load is applied, the above-mentioned failure / failure is likely to occur, and a sufficient reaction force cannot be received from the ground, making it difficult to apply force to the foot.

  b) Although the thing of the said patent document 2 has shock absorption, when the outer bottom face of the heel part of the shoe is flat, for example, when walking or running on an inclined ground, On the other hand, when force in an oblique direction is applied to the shoe, the shoe deforms as the bottom of the shoe follows the inclination, and the pressure applied from the lower leg axis does not become straight in the ribs. If the outer bottom surface of the heel or heel is flat, excessive rotation and excessive load are applied to the ankle and the bone and tendon of the surrounding area, and it is easy to cause failure and failure as described above, and It is difficult to receive enough reaction force from the ground and it is difficult to apply force to the foot.

  c) The thing of the said patent document 3 is the same as the case where a foot | leg is a bare foot because a shoe sole corresponds to the natural shape of the side part of a foot | leg, and has fixed thickness in the left-right direction vertical plane cross section. It is recognized that the feet naturally interact with the ground.

  However, sufficient attention has not been paid to the holding and fixing of the ankle joint, and this still tends to cause failures such as sprains and flesh separation, and it remains doubtful that the metatarsal movement is sufficiently guaranteed. There are still problems in that it is possible to apply sufficient force on the outer and rear surfaces of the shoes when walking and running on uneven surfaces and inclined surfaces of the road surface, and to reliably walk and run by receiving reaction force from the road surface and inclined surface.

  In addition to the above-mentioned patent documents, there are also proposed those in which the entire sole of the shoe is made spherical (see, for example, Japanese Patent Application Laid-Open No. 2001-87717 and Utility Model Registration No. 3163582). However, they are intended for rehabilitation and training, and are different in configuration, purpose, problem, and effect from the present invention.

  An object of the present invention is to solve the problems of the conventional shoes described above. That is, the object of the present invention is to be stable during walking and running and to apply a sufficient force to the ground, and to overload the ankle, surrounding joints, bones and tendons. It is intended to provide a shoe that can prevent the occurrence of the above-mentioned failure, the occurrence of the above-mentioned failure / failure, and the function of the foot sufficiently.

The shoes according to the present invention are:
A heel cup portion 3 having both side wall portions 4 and a rear wall portion 5 is provided on the inner side of the shoe heel portion 2 so as to restrict the movement of the ankle portion except for dorsiflexion and bottom flexion. Furthermore, a thinner bending portion 9 is provided from the vicinity of the base of the fifth metatarsal 7 of the foot to the portion corresponding to the vicinity of the front of the first metatarsal 8, and the outer shape of the shoe heel part 2 is provided. It is formed in a substantially hemispherical portion 10 that is convex downward.

  In the above configuration, the back bottom 6 of the shoe 1 is entirely formed by integral molding, and the material thereof is made of rubber (for example, natural rubber, synthetic rubber, latex so as to have shock absorption (cushioning) and wear resistance. Rubber or foamed rubber sponge) or synthetic resin. In addition, the substantially hemispherical portion 10 in the shoelace portion 2 is substantially hemispherical downward in the no-load state (see, for example, FIGS. 2 and 4), but when a weight or other load is applied, It is assumed that the contact portion has a slightly flat shape (for example, see FIGS. 5 and 6) with hardness and elasticity.

  Here, the outer shape being substantially hemispherical means that the outer shape when the shoe is viewed not only from the front (or rear) but also from the side is substantially hemispherical with convex portions downward. The substantially hemispherical portion 10 need not have a height exactly equal to the spherical radius. Inside the shoe heel part 2, a concave shape is formed so that the heel part 11 of the foot can be engaged (see, for example, FIG. 5).

  The heel cup portion 3 has both side wall portions that have an upper edge portion 12 that has a height almost above the ankle of the foot and that restricts the movement of the ankle joint portion except for dorsiflexion and buckling. 4 and a rear wall 5.

  It should be noted that the portion 9 corresponding to the front portion of the first metatarsal bone 8 in the bending portion 9 of the back bottom portion 6 of the shoe 1 is, in other words, the portion corresponding to the vicinity of the rear portion of the toe proximal phalanx 13. I can say that. In the drawings of the prior art shown for comparison with the present invention, the same reference numerals are assigned to the parts corresponding to the present invention.

The shoe of the present invention having the above configuration exhibits the following actions and effects.
B) The shoe 1 of the present invention has a heel cup portion having both side wall portions 4 and a rear wall portion 5 that surround the vicinity of the heel portion 11 of the foot so that the movement of the ankle joint portion can be restricted except for dorsiflexion and plantar flexion. 3 is formed.

  For this reason, when the shoe 1 is worn, the foot has a sense of unity with the shoe, and the ankle joint portion is restricted from movement except for dorsiflexion and plantar flexion, and twists the ankle. It is possible to prevent malfunctions and failures such as sprains and fleshing. This is particularly effective when an oblique force is applied to the shoe / foot while walking or running on an uneven ground g or an inclined surface as the shoe bottom follows the shoe.

  That is, in the conventional shoe, since the bottom of the shoe part tends to follow the inclination, the pressure applied from the axis line y of the lower leg is not in the straight direction of the rib (see, for example, FIG. 17). In addition, excessive rotation and excessive load were applied to the tendon portion, and it was easy to cause a failure and failure as described above. On the other hand, in the shoe 1 of the present invention, the pressure applied from the lower leg axis y is in the straight direction of the ribs (see, for example, FIGS. 7, 8, and 9). Can be prevented.

  B) In the present invention, as described above, the outer shape of the shoe heel portion 2 is formed in the substantially hemispherical portion 10 convex downward, so that the contact state of the heel back portion with the ground g is a hemispherical curved surface. (See, for example, FIG. 2 and FIG. 4), and movements other than the dorsiflexion and sole flexion of the foot are movements with the ground contact surface of the shoe 1 as an axis.

  When the shoe 1 is put on and a load is applied by weight or the like, the contact state with the ground g becomes surface contact, but the surface contact only becomes a surface contact state in a very small area (for example, FIG. 5, see FIG. Moreover, in any case where the inclination of the ground g is inclined to the left or right, or forward or backward, the contact between the shoelace part 2 and the ground g is a contact at any part of the curved surface of the substantially hemispherical part 10. (See, for example, FIGS. 7, 8, and 9).

  In the conventional shoe, since the shoelace part 2 is flat, the contact state between the shoelace part 2 and the ground g suddenly changes and becomes unstable due to the inclination of the body, the inclination of the ground g, etc. ( For example, as shown in FIGS. 17 and 18, in the shoe of the present invention, as described above, the contact between the shoe 2 and the ground g is a contact at any part of a substantially hemispherical curved surface. Regardless of the body inclination or the like, the force applied from the shoelace 2 is always infinitely smooth (see, for example, FIGS. 7, 8, 10, 12a, b, c, and 13), and the foot It is possible to eliminate a sudden change or force applied to the joint.

C) Similarly, since any part of the curved surface having a substantially hemispherical shape is in contact with the shoe girdle part 2 and the ground g, the body is ordinated with the shoe gutter part 2 in contact with the ground g. When it is turned around, the knee joint or the like is not burdened unlike the conventional one. That is, those having conventional planar Kutsukakato unit 2, as it were (see e.g. FIG. 20a) from a fixed state with respect to the planar Kutsukakato unit 2 is ground g, the above fixed state and turning the body With respect to a certain radius / talus 18, the tibia / radius 19 connected to the upper part tries to rotate around the axis y of the foot (see, for example, FIG. 20b) . For this reason, an excessive force is applied to the ankles and knee joints, causing a burden and failure.

On the other hand, in the shoe 1 of the present invention, since the shoelace part 2 is in contact with the ground g with a small area of the hemispherical part 10, the shoelace part 2 is in contact with the ground when the body is turned. Can be rotated around the axis (see, for example, FIG. 11). Therefore, when the tibia, fibula 19 by turning it around the vertical axis of the body turns around the axis y of the foot, because so that the heel bone, the talus 18 is also around to follow around the axis y, the conventional planar Unlike conventional shoe 2 shoes, an excessive force is not applied to the ankles and knee joints, eliminating the burden and preventing breakdowns and failures.

  D) Similarly, since the shoelace part 2 is a substantially hemispherical part 10 that protrudes downward, the foot can be smoothly carried during walking / running, unlike a shoe having a conventional flat shoelace part 2. Since this can be done, unlike a shoe having a conventional flat shoe heel part 2, it is possible to prevent a burden or damage to a ligament or an Achilles tendon.

  That is, in the conventional shoe 1, since the entire flat shoe-shoe part 2 is grounded as soon as the rear end part of the shoe-shoe part 2 is grounded during walking and running, the entire bottom surface of the shoe is grounded. The angle α formed by the back surface of the foot and the axis y of the foot suddenly changed greatly, the change in the force for expanding and contracting the ankle ligament and the Achilles tendon was sudden, and the load on the foot and fatigue were large.

  On the other hand, in the shoe 1 of the present invention, since the shoe heel part 2 is substantially a hemispherical part 10, the rear part of the hemispherical part 10 is first grounded during walking / running (for example, see FIG. 12a). The ground contact point P is P1, and then the ground contact point P is grounded while gradually moving forward with P2 and P3 along the curved surface of the substantially hemispherical portion 10 of the shoelace 2 (for example, FIG. 12b).

This will be explained in a little more detail based on FIG. 13 (this figure is drawn on the basis of the substantially hemispherical part 10 of the shoelace part 2 and the ground g is the same horizontal plane) . Initially, the contact point P when the rear part of the shoe heel part 2 is in contact with the ground g is the position of P1 near the rear part of the curved surface of the hemispherical part 10, and then the back of the shoe 1 as the body moves forward. Although the bottom surface 6 approaches the ground g, the contact point P of the substantially hemispherical portion 2 at that time is at the position P2, and further, the substantially hemisphere when the back bottom surface 6 of the shoe 1 is grounded (see, for example, FIG. 12b). The grounding point P of the section 2 moves forward to the position P3.

  Thereafter, when the body further moves forward, the bending portion 17 near the front portion of the bottom of the shoe sole is bent, and the ground contact of the substantially hemispherical portion 10 is finished, and the shoe heel portion 2 is lifted (see, for example, FIG. 12c). Unlike the conventional one, the angle α formed between the foot axis y and the bottom of the foot at each of the contact points P1, P2, P3 is always maintained at approximately 90 degrees (a in FIG. 12 above). , B, c, see FIG. 13). Therefore, in the shoe of the present invention, the change in the force for expanding and contracting the ligament and the Achilles tendon around the ankle during walking and running is reduced, and the load and fatigue on the foot can be reduced.

  E) In the shoe according to the present invention, the back bottom portion 6 other than the shoe heel portion 2 corresponds from the vicinity of the base portion of the fifth metatarsal bone to the vicinity of the front portion of the first metatarsal bone (or the rear portion of the base phalanx). A thin-walled bending portion 9 is provided over the portion. Therefore, the part from the center part to the front part is movable so as to bend independently with respect to the root part of the rear part of the foot based on the ribs.

  As a result, the three points (see the hatched portion in FIG. 16) of the heel 11 of the foot, the base ball 14 and the small ball 15 can be balanced and can support the weight and other loads well. it can. For this reason, so-called three-point support is possible, so that it is possible to walk and run on the flat ground 1 as well as on an uneven or inclined ground g without applying excessive load or excessive load on the ankle joint. .

  F) Thus, the shoe of the present invention has the above-described heel cup portion 3, the bending portion 9, and the shoe heel portion 2 that has a substantially hemispherical portion 10 that protrudes downward, and thus has a synergistic effect. Regardless of the unevenness and inclination of g, it is possible to support three points at all times, so that excessive force is not applied to the foot locally. As a result, it is stable during walking and running, and it can apply sufficient force to the ground, and excessive load is applied to the ankle, surrounding joints and bones, ligaments and tendons, etc. It is possible to prevent the occurrence of a foot failure / failure and prevent the foot function sufficiently and reliably.

It is a perspective view which shows the Example of the shoe which concerns on this invention. It is a vertical side view of the shoe shown in FIG. It is a bottom view of the shoe shown in FIG. It is a vertical rear view of the heel part of the shoe shown in FIG. It is a vertical side view at the time of putting on the shoes shown in FIG. FIG. 2 is a longitudinal rear view of a heel portion when the shoes shown in FIG. 1 are worn. FIG. 2 is a longitudinal rear view of a heel portion when the shoe shown in FIG. 1 is worn on an inclined surface. FIG. 8 is a longitudinal rear view of the heel portion when the shoe shown in FIG. 1 is worn with an inclined surface opposite to that in FIG. 7. It is a vertical side view at the time of putting on the shoes shown in FIG. 1 in the place with an unevenness | corrugation. It is a vertical rear view at the time of tilting the body while wearing the shoes shown in FIG. It is a vertical back view at the time of turning the body wearing the shoes shown in FIG. Each figure of a, b, c is a schematic side view which shows the grounding state at the time of walking, wearing the shoes shown in FIG. It is a vertical side view which shows the movement of the ground-contact point P of the substantially hemispherical part of a shoelace part and the ground at the time of walking with the shoes shown in FIG. It is a schematic perspective view which shows the motion of the leg of the state which raised the ankle. It is a schematic perspective view which shows the motion of the foot | leg in the state which removed the ankle. It is a top view which shows the name of the bone of a leg | foot. It is a vertical rear view when the body is slightly tilted while wearing conventional shoes. FIG. 18 is a longitudinal rear view when the body is further tilted from the state shown in FIG. 17. It is a vertical back view of the state which put on the conventional shoes and grounded on the inclined surface. a is a longitudinal rear view when a conventional shoe is worn and is stationary, and b is a longitudinal rear view when the body is turned.

  A heel cup portion 3 having both side wall portions 4 and a rear wall portion 5 is provided on the inner side of the shoe heel portion 2 so as to restrict the movement of the ankle portion except for dorsiflexion and bottom flexion. Furthermore, a thinner bending portion 9 is provided from the vicinity of the base of the fifth metatarsal 7 of the foot to the portion corresponding to the vicinity of the front of the first metatarsal 8, and the outer shape of the shoe heel part 2 is provided. And formed into a substantially hemispherical portion 10 convex downward.

  FIGS. 1 to 13 show an embodiment in which the shoe according to the present invention is a running shoe. Here, like many recent shoes, the upper cover 16 and the sole portion of the upper portion are made by a cemented manufacturing method. The back bottom 6 is bonded with an adhesive, and is formed into a shoe shape by providing a mouth opening that is open at the upper rear.

  The back bottom 6 of the shoe 1 is made of synthetic rubber here, but has shock absorption and wear resistance. The outer shape of the downwardly convex substantially hemispherical portion 10 formed on the shoelace portion 2 has a substantially hemispherical shape convex downward as it is when there is no load, as shown in FIGS. It is set so as to have a hardness and elasticity so that it is slightly flattened at the contact portion when a weight or other load is applied.

  As shown in FIG. 5 and FIG. 6, the side walls 4 and the rear wall that surround the foot joint 2 so as to restrict the movement of the ankle joint other than dorsiflexion and bottom flexion are disposed inside the shoelace 2 of the above-described shoe shape. A heel cup portion 3 having a portion 5 is provided. The upper edge is formed at a certain height up to the vicinity of the upper part of the ankle of the foot.

  The back sole of the shoelace part 2 is formed in a substantially hemispherical part 10 whose outer shape is convex downward. Here, as shown in FIGS. 2, 3, and 4, the substantially hemispherical portion 10 is substantially hemispherical when viewed from the front and back of the shoe. Here, the size is made to be a substantially hemispherical shape having a maximum outer diameter of about 80 mm and a height of about 40 mm.

  The substantially hemispherical portion 10 has a substantially hemispherical outer shape as described above, but the upper surface in the shoelace portion 2 is associated with the footlid portion 11 on the shoelace portion 2 as shown in FIGS. Concave surface is possible.

  Further, the sole 6 other than the shoe heel 2 extends from the vicinity of the base 7 of the fifth metatarsal bone to the front of the first metatarsal 8 (or the rear of the heel proximal phalanx). The bending portion 9 is formed as a thin wall. As a result, the shoe 1 is always supported at three points regardless of the unevenness or the inclined surface of the ground by the synergistic action of the bending portion 9, the heel cup portion 3 and the substantially hemispherical portion 10 of the shoe heel portion 2. This makes it possible to walk and run comfortably on the foot, and exhibits a useful function as a shoe.

  Reference numeral 17 denotes another bending portion, which is formed at a position corresponding to the MP joint which is a joint connecting the metatarsal bone of the foot and the rib in addition to the bending portion 9.

  With this configuration, the shoe can exhibit the beneficial actions and effects as described in the column of the effect of the invention (the description is omitted here to avoid duplication).

  In the above embodiment, the shoes of the present invention are described as running shoes. However, the present invention is not limited to this, and it is needless to say that the present invention can be applied to general shoes, sports shoes, outdoor shoes, rehabilitation shoes, and the like. Of course, the above-described materials, dimensions, manufacturing methods, and the like are illustrative and not limiting.

1-Shoe 2-Shoe shoe 3-Heel cup part 4-Side wall part 5-Back wall part 6-Bottom bottom part 7-Fifth metatarsal 8-First metatarsal 9-Bent part 10-Hemispherical Part 11-heel part of foot 12-upper edge part 13-thumb proximal phalanx 14-base part of ball part 15-small part of bulbar part 16-collar part 17-bent part 18-radius / talus 19- tibia Rib g Ground P, P1, P2, P3-Ground point y-Foot axis α-Angle

Claims (1)

A heel cup portion 3 having both side wall portions 4 and a rear wall portion 5 is provided inside the shoe heel portion 2 of the shoe 1 so as to restrict the movement of the ankle joint portion except for dorsiflexion and bottom flexion. From the vicinity of the base portion of the fifth metatarsal 7 of the foot to the portion corresponding to the vicinity of the front portion of the first metatarsal 8, a bending portion 9 having a thinner thickness than the others is provided on the back bottom portion 6, and the shoelace portion 2. The outer shape of the shoe is formed in a substantially hemispherical portion 10 that is convex downward.

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