JPH078304A - Shoes - Google Patents

Abstract

PURPOSE:To provide shoes which prevent sideward movement without lowering the cushiony effect of midsole and the spring effect of plantar arch section and stabilize the weight shifting. CONSTITUTION:In a shoe having a shoe bottom made by layering an outer sole 2 and a mid sole 6 and uniting them inseparably, a backing material 13 to prevent sideward movement, which extends in one piece from the heel corresponding section 14 to the arch of the foot corresponding section 15, or to the tread corresponding section 16, or to the toe-end corresponding section and is equipped with standing-up sections 18 to hold the heel corresponding section 7 of the mid sole 6 from both sides thereof, is placed between the outer sole 2 and the mid sole 6.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to shoes. More specifically, the present invention provides the cushioning effect of the midsole,
The present invention relates to shoes that prevent lateral shake without damaging the spring effect of the stepless part and stabilize weight movement.

[0002]

2. Description of the Related Art FIGS. 4A, 4B and 4C are explanatory views showing the skeleton and function of a foot. FIG. 4A shows the arch configuration viewed from the inside, FIG. 4B shows the foot bone and load points viewed from above, and FIG. 4C shows the twisted state of the foot.

The foot is mainly composed of a calcaneus 27, a tarsal bone 28, an internal foot bone 29 and a phalange 30.

On the other hand, the names of the grounding sole or the outer sole and the inner sole (midsole) of the shoe are as follows: the part corresponding to the phalange 30 is the toe or the toe equivalent part, the inner foot bone 2
The part corresponding to 9 is referred to as a trampling part or its equivalent part, and the part corresponding to the calcaneus 27 is referred to as a heel equivalent part.

The non-step portion used in the present invention is an arch mainly formed by combining the calcaneus 27, tarsal bone 28, internal foot bone 29 and phalange 30 in an arch shape.

Although we do not like to be bound by theory, we would first like to discuss the morphology and function of the skeleton of the foot.

The arch can support the weight of the foot. The arch is composed of three supporting points, a calcaneus ridge 34, a first metatarsal head 35 and a fifth metatarsal head 36. Further, the body pressure is transmitted from the tibia 31 to the calcaneus 27 (that is, in the direction of reference numeral 32), and from the tibia 31 to the phalange 30 through the tarsal bone 28, the internal foot bone 29 (that is, in the direction of reference numeral 33). )
And done. That is, unless the axes forming the sides of the triangle formed by these three support points are displaced, the transmission of body weight pressure to the foot and the transmission of the ground contact stress of the sole to the tibia 31 are normally performed.

FIG. 4C (a) shows the tibia 31 under stress from the ground.
(B) and (c) show normal skeletal states when the transmission to the body is normal. In (a), the lower surface of the calcaneus 27 is horizontal and the stress line rises through the centers of the calcaneus 27, the talus 34 and the tibia 31. In (b), the vertical axis g in the vertical direction passing through the talus 35 and the calcaneus 27 is strongly refracted with respect to the vertical axis g1 of the tibia 31, so that the angle formed by both axes g and g1 opens outward, Is pronally twisted inward. In (c), the vertical axis g passing through the talus 35 and the calcaneus 27 and the vertical axis g of the tibia 31.
The angle created by 1 opens inward, so that the foot is in the supination position,
That is, it is twisted outward. In both cases (b) and (c), the cause is that the corresponding members of the shoe sole cannot follow the vigorous movement and the axes forming the triangles shown in FIGS. 4A and 4B are deviated.

In shoes, particularly shoes used for competition, it is two important requirements to solve wear resistance and impact resistance. As a solution to this problem, it has heretofore been a mainstream to form a shoe sole with two members, an outer sole made of a material having good wear resistance and a midsole made of a material having good shock absorption.

The midsole is provided with an impact absorbing function by changing the thickness of the midsole, changing the hardness, for example, the foaming ratio, compounding different materials, or combining them.

By the way, in order to reduce the impact applied to the heel of the foot as much as possible, it is adopted to make the heel equivalent part of the midsole as thick as possible in a practically allowable range.

However, the thicker the heel-corresponding part is, the more stress is applied to the calcaneus 27 other than the longitudinal direction, for example, the lateral direction and other unpredictable complicated stresses.
The vertices of the triangles indicated by B and B are biased, which causes an obstacle that the foot is twisted.

As a measure for preventing this defect, the heel is fixed by increasing the hardness and wall thickness of the material around the rising portion of the heel-corresponding portion of the midsole, so-called counter, and the heel swings when landing. There is a method to prevent weight loss and stabilize weight transfer. This method is suitable for walking shoes in which the cushioning of the midsole is attenuated, so that the foot stepped forward always touches the ground from the heel, and the force kicked from the toe is transmitted to the ground. This function alone is not sufficient for athletic shoes with complicated movements such as grounding from the ground, grounding from the heel, or grounding from the side.

Further, as one of the conventional methods, there is a method of preventing lateral shake of the heel by disposing and integrating a stabilizer made of a hard resin in the heel equivalent portion between the midsole and the outer sole. However, this conventional method has drawbacks mainly due to the following two reasons.

That is, first, since the stabilizer made of a material harder than the midsole is provided only in the heel-corresponding part, the cushioning force between the stabilizer and the part not provided is different, 27 parts of the calcaneus
It becomes impossible to follow the movements of the tarsal bone 28, the inner foot bone 29, and the phalange 30, which causes the foot to be twisted.

Secondly, as described above, the stepless portion is an arch mainly formed by integrating the calcaneus 27, tarsal bone 28, internal foot bone 29 and phalange 30, so that the calcaneus-corresponding portion is formed. However, if a stabilizer made of a material whose hardness is different from that of the rest is placed, the transmission of the spring effect, which causes arches, that is, stepped parts, becomes irregular and discontinuous, and the impact at the time of landing is mitigated and the ground is removed. It adversely affects the kicking power.

[0017]

The problem to be solved is to provide a shoe having a shoe sole composed mainly of a midsole and an outer sole without damaging the cushioning effect of the midsole and the spring effect of the non-step portion. The point is that it is not possible to prevent lateral shake and stabilize weight transfer. Further problems to be solved will be successively revealed below.

[0018]

[Means for Solving the Problems] Means for solving the above problems include a shoe having a sole in which an outer sole and a midsole are laminated and integrated with each other, and a heel equivalent between the outer sole and the midsole. A lateral shake preventing reinforcement member that integrally extends from the portion toward the toe-equivalent portion and that has a rising portion for hugging at least the heel-equivalent portion of the midsole from both sides toward the instep direction. It is to arrange.

The lateral shake preventing reinforcement member of the present invention is a type I which integrally extends from the heel-corresponding portion to the non-stepping-corresponding portion.
There are three types, Type II, which integrally extends from the heel-equivalent portion to the stepping portion, and Type III, which integrally extends from the heel-equivalent portion to the toe-equivalent portion. It is essential that each of the types I, II, and III has a rising portion in order to hold at least the heel-corresponding portion of the midsole from both sides in the instep direction.

The rising portion may be stopped only at the midsole portion, or may be extended further upward. In the case of extending the upper part of the upper part, by appropriately combining the material, color or design of the lateral shake preventing reinforcing member or the combination thereof, it is possible to obtain a side effect from the design side in addition to the lateral shake preventing function.

In the case of type I, by providing a rising portion facing upward in the stepless portion, the spring effect generated in the stepless portion can be effectively transmitted to the tibia without escaping in the lateral direction. it can. Further, in the case of type II, a rising part is provided on at least one side of the stepping part equivalent part, and in the case of type III, the rising part is directed upward on at least one side of the stepless part and the stepping part equivalent part. By providing the portion, since the midsole can be held and fixed in the lateral shake preventing reinforcing member, lateral shake can be completely prevented.

In the lateral shake preventing reinforcing member of the present invention, the rising portions provided on one side or both sides of the stepless portion corresponding portion and the stepping portion corresponding portion may have weakened portions having appropriate shapes and structures at appropriate places. It is preferable that bending of the rising portion is facilitated by providing a plurality of pieces.

Examples of the shape and structure of the weakened portion include a notched portion, a punched portion, and a thin rising portion. In the case of notches, the bottom must be rounded to prevent cracking.

The lateral shake preventing reinforcing member of the present invention is integrally formed of a material harder than the materials of the midsole and the outer sole, for example, thermoplastic polyurethane. Since the lateral shake preventing reinforcing member of the present invention extends not only in the heel-corresponding portion but also in the heel-corresponding portion to the stepless portion, the stepping portion-corresponding portion, or the toe portion-corresponding portion, the cushioning force of the midsole is increased. And, the spring effect generated in the stepless portion is evenly transmitted to the tibia, and the rising portion provided on them holds the midsole to prevent lateral swing of the midsole, so that the calcaneus is inside or The stress from the ground contact surface is transmitted vertically to the tibia without twisting outward, and weight transfer is stabilized.

The present invention will be described in detail below with reference to examples.

[0026]

Embodiment 1 FIG. 1 is an exploded perspective view showing Embodiment 1 of the present invention. The upper part 1 covers and protects the entire ankle from the toes of the foot, and is made of various materials with any design. The outer sole 2 is made of rubber or a thermoplastic resin having good wear resistance with appropriate elasticity, and in order to surround and fix the instep 1 and the midsole 6 on the outer peripheral edge portion of the step portion 3 to the toe portion 4. The toe guard portion 5 is integrally formed with the outer sole 2.

The midsole 6 is made of a material having a good shock absorbing property, that is, a cushioning property, for example, foamed polyurethane, and its shape and structure are directed toward the heel-corresponding portion 7, the stepping-corresponding portion 8 and the toe-corresponding portion 9. It is formed so as to be continuously thin, and a sidewall portion 10 for surrounding and fixing the bottom portion of the instep portion 1 is integrally formed with the midsole 6 on the outer peripheral edge portion thereof. Then, a weakened portion 11 for facilitating the bending of the midsole 6 is provided at an appropriate portion of the midsole 6.

At the lower part of the heel-corresponding part 7 of the midsole 6,
A shock absorber 12 having a hardness lower than that of the material of the midsole and made of, for example, high-foam polyurethane is fitted and integrated with the midsole. The shock absorber 12 is a rising portion 1 of the lateral shake preventing reinforcement member 13.
It is shaped so as to be embraced by 8.

The lateral shake preventing reinforcement member 13 is the midsole 6
A harder material, such as a thermoplastic resin, is formed to integrally extend from the heel-equivalent portion 14 to the toe-equivalent portion 17 via the step-equivalent portion 16 and the heel-equivalent portion 7 of the midsole 6 It has a rising portion 18 for holding the outer peripheral edge portion from both sides thereof, and is equivalent to the stepping portion 1.
6 also has a start-up section 38. Stepless part 15
Is cut so as to match the non-stepped portions of the outer sole 2 and the midsole 6, respectively. It is preferable that the toe-corresponding portion 17 be provided with a weakening portion 37 having an appropriate shape to facilitate bending of the lateral shake preventing reinforcement 13.

The above-mentioned upper part 1, the outer sole 2,
The desired shoe is manufactured by fixing and integrating the midsole 6 and the assembly component 39 made of the lateral shake preventing reinforcement 13 respectively.

[0031]

[Embodiment 2] In this embodiment, the lateral shake preventing reinforcement member used is that shown in FIG. 2, and the instep, midsole and outer sole are the same as those shown in FIG.

In FIG. 2, the lateral shake preventing reinforcing member 19 is made of a material harder than the midsole 6, for example, polyutan,
For forming to integrally extend from the heel-corresponding portion 20 to the toe-corresponding portion 22 via the stepless portion-corresponding portion 21, and for hugging the outer peripheral edge portion of the heel-corresponding portion 7 of the midsole 6 from both sides thereof. A rising portion 23 is provided, a rising portion 25 facing upward is provided on the non-step portion 24, and the rising portion 25 has a number of weakening portions 26 to facilitate bending of the rising portion 25. Notches were provided and the bottom of the notches was rounded to prevent cracking.

[0033]

[Embodiment 3] In this embodiment, the lateral vibration preventing reinforcing member shown in FIG. 3 is used, and the other members are the same as those used in the first embodiment.

In FIG. 3, the lateral shake preventing reinforcing member 19 extends integrally from the heel-corresponding portion 20 to the non-stepping portion-corresponding portion 21, and the midsole 6 is held in the heel-corresponding portion 20 from both sides thereof. The rising part 23 is provided on the non-stepping part 24, and the rising part 25 is provided with several notches as the weakening part 26 as in the second embodiment.

[0035]

As described above, in the shoe of the present invention, between the outer sole and the midsole, from the heel-corresponding portion to the non-stepping portion or from the heel-corresponding portion to the stepping-corresponding portion,
Alternatively, to integrally extend from the heel equivalent part to the toe equivalent part via the stepping part equivalent part, and to hold the heel equivalent part of the midsole from both sides thereof, and to hold the footstep equivalent part from both sides or one side thereof. Since it has a lateral shake prevention reinforcing member having a rising part, it prevents lateral shake of the heel and stabilizes the weight movement without attenuating the impact absorbing force of the midsole and the spring effect of the stepless part. be able to. Further, since the weakened portion is provided at an appropriate position of the lateral shake preventing reinforcing member of the present invention, the lateral shake preventing reinforcing member and the shoe can be easily bent.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a lateral shake preventing cross member used in another embodiment of the present invention.

FIG. 3 is a perspective view showing a lateral vibration preventing dissimilar member used in still another embodiment of the present invention.

FIG. 4 is an explanatory view showing the skeleton and function of the foot, where A is an exploded view of the skeleton, B is an upper surface portion, C is an explanatory view showing a normal state and a twisted state, (a) is normal, (b) and (c) Indicates a twisted state.

[Explanation of symbols]

1 Upper part 2 Outer sole 3, 8, 16 and 21 Corresponding part to stepping part 4, 9, 17 and 22 Corresponding part to toe 5 Toe guard part 18, 23, 25 and 38 Starting part 6 Midsole 7, 14 and 20 Heel equivalent Part 10 Sidewall part 11, 26 and 37 Weakened part 12 Shock absorber 13 and 19 Lateral shake prevention reinforcing member 15 and 24 Step equivalent part 27 Heel part 28 Tarsal bone 29 Inner ankle bone 30 Finger bone 31 Bone bone 32 calcaneus Transmission direction of pressure to 33 33 Direction of transmission of pressure to middle forefoot 34 34 Calcaneus ridge 35 First metatarsal head 36 Fifth metatarsal head 39 A view showing a state where a lateral shake preventing reinforcement member is attached to the midsole is there.

Claims (10)

[Claims] 1. In a shoe having a sole in which an outer sole and a midsole are laminated and integrated, the shoe is disposed between the outer sole and the midsole, and is integrally formed from the heel-corresponding portion to the toe-corresponding portion. A shoe comprising a lateral shake preventing reinforcing member which is extended and has a rising portion for holding at least a heel equivalent portion of a midsole from both sides in a direction of an instep. 2. The shoe according to claim 1, wherein the lateral shake preventing reinforcement member extends integrally from the heel-corresponding portion to the stepless-corresponding portion. 3. The shoe according to claim 2, wherein a rising portion facing upward is provided in the non-step portion corresponding to the non-step portion. 4. The shoe according to claim 3, wherein a weakening portion is provided on the rising portion. 5. The shoe according to claim 1, wherein the lateral shake preventing reinforcement member is integrally extended from the heel-corresponding part to the stepping part-corresponding part through the non-stepping part-corresponding part. 6. The shoe according to claim 5, wherein a rising portion facing upward is provided on at least one side of the portion equivalent to the stepping portion. 7. The shoe according to claim 6, wherein a weakening portion is provided on the rising portion. 8. A lateral shake preventing reinforcing member is provided from a heel equivalent portion,
The shoe according to claim 1, wherein the shoe integrally extends to a portion corresponding to the toe via a portion corresponding to the stepping portion. 9. A rising portion directed upward is provided on at least one side of the stepless portion corresponding to the stepping portion and the stepping portion corresponding portion of the lateral shake preventing reinforcement member. 8. Shoes according to item 8. 10. The shoe according to claim 9, wherein a weakening portion is provided in each rising portion.