KR20070110120A - Sole member - Google Patents

Abstract

A sole member capable of securely suppressing the advancement of a gonarthrosis by fitting to the heel part bottom face of a shoe bottom to gently generate a torque while securely relieving impact force when a heel part touches the ground and also enabling comfortable walking without a sense of incongruity even if a healthy person uses it to prevent the gonarthrosis. The sole member comprises a base (4) and a plurality of ribs (5) with elasticity. For use, the base (4) is fixed to the heel part (3a) bottom face of the shoe bottom (3). While tilting in a same direction, the ribs (5) are projected and radially extended from the base (4) in a ground-contact direction, and disposed on the base at prescribed intervals in the circumferential direction. Since the ribs (5) are formed in a shape curved in a radial direction, they are gradually tilted while deforming by a body weight pressure when they touch the ground to relieve the impact force and gently generate the torque in a horizontal direction relative to a ground-contact surface.

Description

Sole member {Sole member}

The present invention relates to a sole member which is provided on the bottom surface of the heel portion of the sole to generate a rotational torque in the horizontal direction with the ground surface by the weight pressure at the time of grounding.

Normally, knee movements include bending and extension (bending and stretching) movements, and sliding and rotational movements are performed on the joint surfaces of the knees. In addition, knee joint is a load bearing joint and plays an important role in supporting and weighting. The structure of the knee joint is a joint between the femur and the tibia and the knee cap, and the bone contact area is covered with articular cartilage so that the bone and the bone do not directly rub. In addition, a crescent cartilage called a meniscus is inserted in the gap between the femur and the tibia, thereby absorbing shock. When walking, the impact load on the joint is known to be three times the weight. In walking in a healthy person, the tibia extends to the outside to absorb the impact of the thigh. The outward extension of the tibia with respect to the femur is called 'screw home movement' and thus stability when standing. On the other hand, in a healthy person, when the knee is fully extended, it extends about 5 ° out of the lower thigh to the thigh so that the knee is stretched stably without depending on muscle strength when standing for a long time.

On the other hand, many people complain of pain in the knee when walking, such a disease is called deformed knee arthritis. Deformed knee arthritis is a degenerative disease in which pain occurs due to wear or deformation of the articular cartilage of the knee due to excessive burden on the joints of the knee. In the case of deformed knee arthritis, the lower leg alignment movement occurs when the lower leg extends inward with respect to the thigh, and the thrust movement occurs outwardly in the knee joint in the early stage of standing and walking. (Skeletal arrangement) changes or strange movements occur.

Therefore, deformed knee arthritis can be prevented by preventing the unnatural movement of the joints of the knee and reducing the excessive burden on the knee joint, and also the progression of the deformed knee arthritis can be suppressed.

BACKGROUND ART Conventionally, shoes for knee arthritis patients are known in order to prevent wear of the knee joint during walking and to prevent bending inward when the knee is straight or slightly bent (see Japanese Patent Application Laid-Open No. 2-107243). This shoe has a floor that is positioned forward in front of the point where the extension line of the knee joint axis intersects the bottom of the heel, and has a floor that rises at an angle of at least 18 ° from the rear end of the floor to the rear. The sole member located above the rising bottom surface is formed of a material having a strength enough to support the weight of the user, and is supported in a cantilever shape from only one side from the front. In addition, at least the rear portion of the upper surface of the sole has a slope in which the outer side is formed higher than the inner side.

However, the shape of this shoe is not preferable in design because it is largely lacking in the heel portion. In addition, since the impact force is directly supported to the rear of the heel of the sole when the knee is grounded, the impact cannot be alleviated sufficiently, which puts a strain on the knee joint.

Moreover, a sole member is known that is attached to the bottom of the heel portion of the sole to generate rotational torque in the direction of the ground plane and the horizontal plane by the weight pressure at the time of grounding during walking (see Japanese Patent Laid-Open No. 55-47804). ). Sole members of this kind are provided with a plurality of ribs which are inclined and protruding in the ground direction and are arranged linearly in a radial direction. Each rib is an elastic flat plate-like projection, and when weight pressure is applied at the time of grounding, the ribs are tilted and moved elastically in the circumferential direction induced by the inclination, and at this time, the rotational torque for turning the shoes by tilting and moving the ribs is Occurs.

When using this kind of sole member, it is possible to promote the extension of the lower thigh corresponding to the thigh to the outside by the rotational torque generated by the movement of each of the ribs when walking. However, when weight pressure is applied to each rib, each rib is tilted at a time from its source, causing rapid rotational torque, insufficient impact force at the heel grounding, and inability to fully control the progression of deformed knee arthritis. have.

In addition, deformed knee arthritis can be prevented by a healthy person using a shoe equipped with this kind of sole member on the bottom of the heel part, but it is pleasant because it gives the user a sense of discomfort because a sudden rotational torque is given to the lower part as described above. You may not feel fit.

In view of the above problems of the present invention, by attaching the sole to the bottom of the heel portion, the impact force can be reliably relieved when the heel portion is grounded, and loose rotation torque can be reliably suppressed. An object of the present invention is to provide a sole member that can walk comfortably without discomfort even when used by a healthy person to prevent knee arthritis.

In order to solve this problem, the present invention is a base fixed to the bottom surface of the heel portion of the sole, radially inclined and protruded in the same direction toward the ground direction from the base, and arranged radially, with a predetermined interval in the circumferential direction A sole member having a plurality of ribs having elasticity provided therein, wherein each rib is inclined and moved by a weight pressure at grounding to generate rotational torque in a horizontal direction with the ground plane, wherein each rib is formed in a radially curved shape. do.

The sole member of the present invention is fixed to the bottom surface of the heel portion of the sole with the base interposed therebetween, and a plurality of ribs protrude toward the ground direction. Each rib is inclined in the same direction toward the ground direction, and is arranged radially and arranged in the circumferential direction. When weight pressure is applied to each of the ribs when the bottom of the heel portion of the sole is grounded, each of the ribs is inclined in the inclined direction, and rotational torque is generated. The rotational torque at this time connects the lower thigh with the user's heel in between, and sets the inclined direction of each rib in the direction in which the lower thigh extends outward with respect to the thigh.

In the present invention, each rib is formed in a shape curved in the radial direction. By this curved shape, each rib becomes an arrangement state of the shape wound up a little more. Because of this, each rib has moderate bending stiffness, and it does not bend and move sharply from its source, and each rib gradually bends according to the weight pressure that gradually increases at the heel grounding accompanying walking. It can be tilted to relieve the shock when grounded.

In addition, since each rib is curved, each rib gradually bends and tilts to increase the rotational angle in order to sequentially increase the weight pressure during heel grounding.

As described above, according to the present invention, it is possible to obtain a smooth cushioning movement at the time of heel grounding and to obtain a high cushioning effect, thereby reducing the burden on the knee joint, thereby ensuring normal gait, and improving the progression of deformed knee arthritis. It can certainly be suppressed. In addition, when the heel is grounded, it can be preferably used for the prevention of deformed knee arthritis because it is possible to walk comfortably without discomfort by generating a relaxed rotational torque.

In addition, the sole member of the present invention may be formed of a material such as natural rubber, synthetic rubber, synthetic resin. The inclination angle of the rib of the present invention is preferably in the range of 60 ° or more to less than 90 °, and may be appropriately selected in consideration of rotational torque and cushioning to the knee joint. In addition, the sole member of the present invention can appropriately select the hardness of the material, the degree of curvature of the ribs, the inclination direction of the ribs, the inclination angle of the ribs, the thickness of the ribs, and the number of ribs in accordance with the symptoms of deformed knee arthritis. In addition, when the sole member of the present invention is attached to the heel bottom of the sole, the base can be fixed to the sole using an adhesive, and can be formed integrally with the heel portion of the sole. In addition to this method, the sole member can be detachably attached to the sole by screwing the base to the sole, or by installing a cotton zipper between the base and the sole.

In the present invention, the plurality of ribs are composed of a first rib having a predetermined length in the radial direction, and a second rib shorter than the first rib, wherein the first rib and the second rib alternate in the circumferential direction. And the second rib is provided radially outward with respect to the first rib.

Since each rib is arranged radially and provided in the circumferential direction, each rib has a wider space | interval on the outer side than the space | interval on the inner side in the radial direction. For this reason, the elasticity per unit area obtained by each rib becomes smaller than the inner side in the radial direction. Therefore, in the present invention, the elasticity per unit area can be generated evenly in the whole by providing the second rib on the outer side in the radial direction and interposing between the first ribs. Therefore, it is possible to absorb the shock evenly at the time of landing the heel and to effectively distribute it in the rotational direction, and to reliably reduce the burden on the knee joint when the user walks.

In addition, it is preferable that the inclined surface is formed in each part of the front end located in the radial direction in the 2nd rib interposed between each 1st rib at this time.

The radially inner side of each rib is narrower than the outer side. For this reason, foreign matter, such as a small stone, can get caught between the insides of the radial direction of each rib at the time of walking, and there exists a possibility that the smooth inclined movement of each rib may be inhibited. The present invention forms an inclined surface on the second rib interposed between the first ribs adjacent to each other, so that the radially inner interval of each rib is opened by the inclined surface and foreign material can be prevented from being inserted into the small stone. In addition, each tip portion located in the radially inward direction of the second rib has a relatively thin skeleton thickness by the inclined surface, so that even if foreign matter such as small stones is inserted between the second rib and the first rib, the inclined surface of the second rib This formed portion is flexible to bend smoothly foreign matter such as stones.

Moreover, in this invention, it is preferable that the unevenness | corrugation is formed in the edge surface used as the ground surface of the said rib.

As a result, slippage between the ribs and the road surface or the floor surface can be prevented, and rotational torque in accordance with the inclined movement of each rib can be reliably generated.

Further, in the present invention, when the base is fixed to the bottom surface of the heel portion of the sole, the ribs protrude a predetermined amount from the bottom surface of the heel portion of the sole, and at least the center portion of the array circumference of each rib corresponds to the lowest point of the heel bone. It is installed to be located.

Since each rib protrudes a predetermined amount from the lower surface of the heel portion of the sole, the inclined movement of each rib during heel grounding can smoothly generate rotational torque without being hindered by the grounding of the lower surface of the heel portion. In addition, each rib is positioned at the center of the column circumference corresponding to the lowest point of the heel bone, so that a relatively large line amount can be obtained according to the inclined movement of each rib. On the other hand, the position corresponding to the lowest point of the heel bone corresponds to the position of 14 to 17% of the length of the foot from the heel end of the foot toward the toe tip.

In addition, in the present invention, a disk-shaped ground plate which is connected to the ground side of each of the ribs and covers the lower portion of the array circumference of the ribs and faces the base can be provided.

Therefore, when walking, the ribs are evenly inclined to move between the ground plates and generate stable rotational torque, and the ground plates are exposed from the bottom of the sole of the sole, so that each rib is concealed between the base and the ground plate. Therefore, it is possible to more reliably prevent the insertion of foreign matter such as small stones at intervals between the ribs.

1 is a bottom view of a shoe employing a sole member according to an embodiment of the present invention.

Figure 2 is a perspective view of the sole member according to an embodiment of the present invention.

Figure 3 is a bottom view of the sole member according to an embodiment of the present invention.

4 is a cross-sectional view taken along line IV-IV of FIG. 3.

5 is a perspective view showing a sole member of another embodiment of the present invention.

An embodiment of the present invention will be described with reference to FIGS. 1 to 4. The sole member 1 of this embodiment is attached to the heel portion 3a of the sole 3, which is the ground side of the shoe 2, as shown in FIG.

First, the configuration of the sole member 1 will be described.

The sole member 1 is formed of a rubber composition such as natural rubber or synthetic rubber, and as shown in Figs. 2 and 3, the base 4 and the plurality of ribs 5 (a plurality of first ribs 5a). ) And a plurality of second ribs 5b). The base 4 is formed in a flat disk shape, and its upper surface 4a is integrally bonded to the sole 3a.

As shown in FIG. 4, each rib 5 is integrally provided in the lower surface 4b of the base 4, and is inclined in the ground direction (lower side), and protrudes. 3, each rib 5 is arranged in the radial direction and provided at predetermined intervals in the circumferential direction. Each rib 5 is formed in a radially curved shape. That is, each rib 5 has the long axis 6 along the radial direction, and the long axis 6 is formed in the curved shape. Thereby, the shape in the arrangement | positioning state of each rib 5 is a shape wound further.

Each rib 5 has a first rib 5a having a predetermined length in the radial direction and a second rib 5b shorter in length than the first rib 5a, and the first rib 5a and the second rib 5a. The ribs 5b are alternately provided along the circumferential direction. Further, the second rib 5b is provided on the radially outer side of the first rib 5a adjacent to each other, and the inclined surface 7 is provided at each tip portion located in the radially inner side of the second rib 5b. Formed. Further, fine unevenness and slip prevention 8 are provided on the end face serving as the ground plane of each rib 5.

In one embodiment of the present invention, the sole member 1 has a diameter of 50 mm and a thickness of 4 mm. Both the first rib 5a and the second rib 5b have a thickness of 3 mm and a height of 7 mm. In the radial direction (long axis 6 direction), the length of the first rib 5a is 20 mm, the length of the second rib 5b is 15 mm, and the first rib 5a and the second rib 5b are each 6 It is installed one by one. On the other hand, the hardness of each rib 5 is 75 degrees (JIS-A hardness). In either of the first ribs 5a and the second ribs 5b, the inclination angle α becomes 60 ° with respect to the base 4.

In addition, as shown in FIG. 1, the sole member 1 has a center portion of the circumference of each rib 5 (in this embodiment, coincides with the center portion 9 of the base 4) at the lowest point of the heel bone (not shown). It is provided in the sole 3 so that it may be located correspondingly. Specifically, in one embodiment of the present invention, the center portion 9 of the base is provided at a position of about 16% of the total length from the heel end of the foot toward the toenail. In addition, although not shown, each rib 5 protrudes 4 mm downward from the lower surface of the heel part 3a of the sole 3, and is provided. On the other hand, the protrusion amount from the lower surface of the heel part 3a of each rib 5 should just obtain cushion property at the time of heel grounding, and can be suitably set in the range of 2 mm-4 mm. In addition, the sole member 1 provided in the sole 3 has each rib 5 so that the toe tip rotates and extends in the direction indicated by the arrow B in FIG. 1 with the central portion 9 of the sole member 1 as an axis. The inclination direction is set.

Next, the operation at the time of walking in the case of using the shoe 2 which attached the sole member 1 comprised as mentioned above is demonstrated.

When walking using the shoe 2, each rib 5 of the sole member 1 provided in the heel portion 3a of the sole 3 is grounded. At this time, the weight of the user is given to each rib (5). At this time, the weight pressure applied to each rib 5 gradually increases until the heel portion 3a of the sole 3 is completely grounded. And each rib 5 is inclined with respect to the base 4, as shown in FIG. 4, and starts the inclination movement along the inclination direction. As shown in Fig. 3, the ribs 5, which started the inclined movement, are curved, and are bent from their roots so as not to bend and move inclined. Generates gentle rotational torque. In addition, since the anti-slip 8 is provided on the end face of each rib 5 by the ground surface, the body weight can be converted into the rotational torque without slipping, and the rotational torque is generated smoothly.

In this case, the lower thigh of the user extends outwardly with respect to the thigh by the rotational torque of each rib 5 to obtain a smooth screw rotational movement, and the burden of the knee joint is reduced to allow normal walking. Moreover, since the 2nd rib 5a is interposed between each 1st rib 5a in the radially outer side, the elasticity which arises from each rib 5 becomes equal, and the shock at the time of heel landing is absorbed evenly. At the same time, they are efficiently dispersed in the rotational direction. This reliably reduces the burden on the knee joint during walking of the user.

In addition, as shown in FIG. 3, the second rib 5b has the inclined surface 7 formed therein to prevent foreign matter such as small stones from being caught between the ribs 5 that hinder the generation of rotation torque. . In addition, when foreign matter such as small stones is caught between the second ribs 5b and the first ribs 5a, the second ribs 5b are flexed flexibly by the inclined surface 7 of the second ribs 5b. Of foreign substances can be removed smoothly.

Thus, by using the shoe 2 with the sole member 1 of the embodiment of the present invention, a comfortable wearing feeling can be obtained without discomfort and the force to push outward in the knee joint at the beginning of standing and walking (trust ( By reducing the thrust, it is possible to prevent the deterioration of symptoms of deformed knee arthritis patients and to prevent deformed knee arthritis because the normal walking motion without burdening the knee joint can be obtained.

On the other hand, in one embodiment of the present invention, as shown in Fig. 1, each rib 5 of the sole member 1 is exposed from the heel portion 3a of the sole 3. In addition, as shown in FIG. 5, the disk-shaped ground plate 10 which opposes the base 4 can be provided. The ground plate 10 is integrally attached to the end surface of the ground side of each rib 5, and the anti-slip 11 by the fine unevenness | corrugation is formed in the ground surface. Thereby, each rib 5 can be inclined and moved uniformly with the ground of the ground plate 10, and can generate stable rotational torque. Also, since each rib 5 is between the base 4 and the ground plate 10 and is covered by the ground plate 10 and is concealed, it is possible to securely insert foreign substances such as small stones between the ribs 5. It can prevent.

According to the sole member of the present invention, by mounting on the sole surface of the heel portion of the sole, patients with deformed knee arthritis can promote normal walking to prevent the progression of the disease, especially in patients with deformed knee arthritis appearing a lot in elderly women The target patient can improve walking behavior and promote natural treatment.

Further, according to the sole member of the present invention, by attaching to the sole surface of the heel portion of the sole, it is possible to provide a walking exercise that does not burden the knee joint even in a healthy person and prevent the occurrence of deformed knee arthritis.

Claims (6)

A base fixed to the bottom of the heel portion of the sole, and a plurality of ribs having an elastic inclination projecting in the same direction from the base toward the ground direction, arranged radially, and provided at a predetermined interval in the circumferential direction, In the sole member in which each rib is inclined by the weight pressure at the time of grounding and generates a rotational torque in the horizontal direction with the grounding surface, The sole member is formed in a radially curved shape. The method of claim 1, wherein the plurality of ribs comprises a first rib having a predetermined length in the radial direction, and a second rib shorter than the first rib, The first rib and the second rib are alternately arranged in the circumferential direction, The second rib is provided on the radially outward side with respect to the first rib. The sole member according to claim 2, wherein the second rib has an inclined surface formed at each tip portion located radially inward. The sole member according to claim 1, wherein irregularities are formed in an edge surface that is a ground surface of the rib. The method of claim 1, wherein each of the ribs protrudes a predetermined amount from the bottom of the heel portion of the sole when the base is fixed to the bottom of the heel portion of the sole, and at least the center portion of the circumference of the rib arrangement corresponds to the lowest point of the heel bone. Sole member characterized in that the position. The sole member according to claim 1, further comprising a disk-shaped ground plate which is connected to the ground side of each of the ribs, covers a lower portion of the array circumference of the ribs, and faces the base.

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