JPH02234702A - Shoe - Google Patents

Abstract

PURPOSE:To re-emit kinetic energy and improve the functional property of sport shoes by fitting an impact resilience shock absorbing unit integrally formed with a specific impact resilience member and a shock absorbing member to one of the depression section of a shoe mid-sole or a core mat and a heel section. CONSTITUTION:An impact resilience shock absorbing unit integrally formed with an impact resilience member 5 made of high-impact resilience elastic polymer alloy having characteristic values of JIS impact resilience 70% or above and JIS A hardness 25-40 and a shock absorbing member 6 having characteristics value of JIS impact resilience 20% or below and Shore A hardness 25-80 is fitted to both or either one of the depression section 2 of a mid-sole 1 made of foaming synthetic resin or sponge and a heel section 3. The impact resilience shock absorbing unit 4 itself is deformed by shock stress and exerts a damping action, it re-emits energy when it is recovered to the original shape, and this recovery energy can be effectively utilized for the movement action.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to the improvement of the characteristic values related to impact mitigation and rebound resilience in the Minor sole and insole for Nocuzu.

(Prior Art) Conventionally, for example, minodo soles for sports shoes and mid-sized shoes have been equipped with various types of shock absorption to prevent damage to the feet and legs caused by the impact of landing during running or jumping. Those with this structure have been commercialized and are publicly known.

For example, to explain the Minotosole for shoes, as disclosed in the Publication of Utility Model Publication No. 63-7041, "... shoes with soles have a density of 0.1-0.
．． 5 g/cm3, impact resilience [1.5-10% (J I
SK6 3 0 1) Shoes with a shock absorbing structure made by attaching soft polyurethane heat compression molded sort with a hardness of 20 to 50 (sponge hardness tester type C) to the lower surface of the insole]; , Utsukai Showa 6 2 -. +
As disclosed in No. 6 6 7 0 4, ``Two opposing sheets of No. 1 are partially adhered to form a number of independent filling chambers, and the gel material is filled in the filling chambers. A cushioning body formed by inflating a filling chamber with a filling chamber, and a housing recess formed at the bottom having a depth approximately equal to the thickness of the filling chamber of the cushioning body, and the above-mentioned cushioning body is fitted into the housing recess. There are already well-known devices whose main idea is "shoe soles that are comfortable."

(Problem to be Solved by the Invention) Now, to explain the basic method of buffering the impact, the following methods can be considered.

That is, one of them is called "elastic buffering." This uses a so-called spring-like material or structure to store external kinetic energy as deformation energy, buffer the impact, and release it again as kinetic energy when the deformation returns.

Another method is called ``viscous buffer''. This is a so-called viscous material that absorbs impact energy by converting external kinetic energy into heat or the like.

Compare these forms of buffering with the above-mentioned known examples! l-repa,
That is, in the case of the former Utility Model Publication No. 63-7041, a soft polyurethane thermocompression molded notebook is used, and these notebooks are made of EVA subonoji, polyurethane foam, etc., which are currently commonly used for minot soles and insoles. Similarly, it is a so-called ``viscoelastic body'' that has the properties of ``elastic buffering'' and ``viscous buffering'' as described in L. It is something.

Furthermore, the latter Jikai Sho 6 2-. + 6 6 7 0
In the case of No. 4, a gel substance is used, which has rather strong "viscous buffering" properties.

Therefore, in running etc., r elastic cushioning' or
``In regards to which viscous buffer 51 is preferable, it is necessary to consider the vibration component during ground contact during running.

In other words, among the vibration components when touching the ground, it is difficult to absorb them by the body's buffering action, and the fast vibration components (which cause vibrations in muscles and bones) are difficult to absorb.
It is generally said to be around 25 to 30 Hz)
In this case, viscous damping is desirable and a necessary component for running, i.e., a gentle (slow) vibration component that can be reused by body movements (generally 2 to 3 II z
elastic cushioning is considered desirable.

However, if even the gentle (slow) vibrations that can be reused by the body are used as a viscous buffer, it will feel as heavy as running on sand, increasing fatigue. Therefore, with the shock-absorbing structure of the Sports Nokoz mentioned above,
These characteristics of viscous buffering are too strong, and improvements are desired.

On the other hand, in the case of elastic cushioning (J1), does the body utilize the released energy and make it easier to run without getting tired? No material has been found that fully satisfies these characteristics.

Therefore, in view of these conventional drawbacks, the present invention aims to re-release this elastic cushioning, that is, kinetic energy, and to improve sportswear.
-Improve the functionality of 14. The purpose of this invention is to provide an improved midosole or insole that is sufficiently effective in terms of shock-absorbing properties.

(Means for Solving the Problems) Based on the above, the present invention is characterized by the following configuration.

That is, in the soles and insoles for shoes made of foamed synthetic resin, sponge, etc. (EVA, foamed polyurethane, thermoformed socks, etc.), the treading part and heel part of the minodosoles and insoles for shoes, or the To one side. T T S rebound resilience 70% or more, and J
It embodies a resilient member made of a high resilience elastomer alloy having a characteristic value of IS-A hardness of 25 to 40, and a shock absorbing member having a characteristic value of JIS resilience of 20% or less and a yaw Δ hardness of 25 to 80. This product is characterized by being equipped with a repulsion-resilient shock-absorbing unit made of

In addition, by appropriately changing the structure and shape of the resilient shock absorbing unit used in the present invention, it is possible to create a midsole for sports shoes that has so-called energy return characteristics that have impact buffering and rebound resilience that are suitable for various sports sports shoes. It is possible to provide an insole.

Furthermore, the form of bonding between the repulsion elastic member and the shock absorbing member, which are constituent members of the repulsion elastic shock absorption unit according to the present invention, is such that the impact absorption member is joined to the upper and lower surfaces of the repulsion elastic member, or to either one of the surfaces. Embodied forms are also possible.

Or, conversely, a form in which the repulsion elastic member is integrally bonded to the upper and lower surfaces or either one of the surfaces of the shock absorbing member is also possible.

In addition, as for the joining form of the repulsive elastic member and the shock absorbing member, it is also possible to have the impact absorbing member interposed and integrated inside the repulsive elastic member, or conversely, the repulsive elastic member is interposed inside the impact absorbing member. A form in which members are interposed and integrated is also possible.

In addition, the impact-resilient shock absorbing unit has a shape that matches the metatarsal bone that encompasses the ball of the foot and the ball of the foot in the stepping part, and a shape that roughly follows the outer circumference of the heel part in the heel part. In addition, the shape of the resilient shock absorbing unit may be a trapezoid, a rectangle, a spindle shape, a fan shape, etc., or any combination of these shapes as appropriate, or the shape of the resilient shock absorbing unit may be formed in the foot length direction or foot width direction. It is also possible to form holes or four parts of arbitrary shapes inside or outside.

(Function) With the configuration as described below, the following effects occur in the present invention.

In other words, the midsole and insole itself have conventionally been made of commonly used materials such as EVΔ, foamed polyurethane, thermoformed sponge, and other arbitrary materials, as well as having JIS rebound resilience of 70% or more as a shock absorbing unit with rebound resilience. Hitetsuki. An elastic member made of a high resilience elastomer alloy having a characteristic value of JIS-A hardness of 25 to 40. 1 1 8 Since a shock absorbing member with a rebound resilience of 20% or more and a characteristic value of Shore A hardness of 25 to 80 is used in an integrated manner, the part of the former elastic member is responsible for the landing impact during running. It has the effect of buffering the impact and at the same time generating rebound resilience, so it becomes a so-called elastic buffer, and the re-released energy is used by the body, which is also useful when continuing exercise such as lannonning. It is something that can be done relatively without getting tired.

On the other hand, the latter part of the shock absorbing member acts as a so-called viscous buffer because it absorbs and alleviates fast vibrations that cannot be absorbed by the body and have an adverse effect on the body.

Furthermore, the elastic member and shock absorbing member that constitute the resilient shock absorbing unit attached to the midsole or insole of the present invention may be in the form of foam, solid, or gel, and these forms may be used in an appropriate combination. It is possible.

Further, although it may remain solid without forming holes or four parts, it is preferable to form holes in circular, triangular, square, or other shapes, or to form recesses, as shown in the drawings.

By doing this, the resilient shock absorbing unit itself deforms due to impact stress and exerts a buffering effect, and when it restores to its original shape, it re-releases energy, so this restoring energy is used. The effect of being able to use it effectively for exercise movements is even greater.

In addition, as in the present invention, the combination of the midsole or insole with the repulsion elastic shock absorption unit reduces the impact buffering due to the repulsion elasticity and shock absorption, and the static hardness of the shoe sole itself (
It becomes possible to change the texture etc. relatively freely, and the degree of freedom in the design of the saw itself is significantly increased.

(Example) Examples of the present invention will be described below using Minodosol as an example.

That is, as shown in FIGS. 1 and 2, in a midsole I made of foamed synthetic resin, sponge, etc., one of the stepping parts 2 and I1 and the heel part 3 of the midsole I is A resilient member 5 made of a high resilience elastomer alloy having a JIS resilience of 70% or more and a JIS-A hardness of 25 to 40, and a JIS resilience of 20% or more and a hardness of 25 to 40. Shock absorbing member 6 having a characteristic value of 80
These shoes are characterized by being equipped with a repulsion elastic shock absorbing unit 4 formed by integrating the above.

Note that among the materials of the resilient shock absorbing unit 4 according to the present invention, the resilient member 5 has a JIS resilience of 70%.
As described above, it is preferable to use a high resilience elastomer alloy having a characteristic value of JIS-A hardness of 25 to 40, but examples of polymers that satisfy these characteristics include isoprene rubber (IR), natural rubber (NR), There are butadiene rubber (BR), urethane rubber (U), and others. Blends of these blends and other rubbers can also be used as long as they have the above properties.

- For the shock absorbing member 6, it is possible to use a viscoelastic polyurethane elastomer (for example, the trade name Sorposein), norbornene polymer (for example, the trade name Norsolex), Noricone gel, or other materials with the same effectiveness. It is possible.

In addition, as shown in FIG. It is desirable to form it in a shape that encompasses the area and follows the outer circumferential shape of the heel portion 3.

In other embodiments of the present invention, as shown in FIGS. 3 to 12, the shape of the resilient shock absorbing unit 4 may be a trapezoid, a rectangle, a spindle, a sector, or any other appropriate combination of these shapes. It is also possible. Furthermore, a repulsion elastic member 5 forming the repulsion elastic shock absorption unit 4
The form of the shock absorbing member 6 can be either on the upper surface of the repulsion elastic part 5 (FIGS. 4 and 10) or on either side (FIGS. 2, 3, and 7). It is possible to have a configuration in which the shock absorbing member 6 is integrally bonded, or conversely, the repulsion elastic member 5 is integrally bonded to the upper and lower surfaces of the shock absorbing member 6, or to either one of them (FIGS. 6 and 9). A simplified configuration is possible as well.

Furthermore, as a configuration form of the repulsion elastic member 5 and the impact absorption member 6 that constitute the repulsion elastic shock absorption unit 4, there is a fifth structure.
8, 13, and 14, it is possible to have a structure in which a shock absorbing member 6 is interposed and integrated inside the repulsive elastic member 5, or conversely, as shown in FIG. A configuration in which the repulsion elastic member 5 is interposed and integrated inside the absorbent member 6 is also possible.

Furthermore, as other embodiments of the present invention, FIGS.
As shown in FIG. 11, the shape of the repulsion elastic shock absorbing unit 4 can be a trapezoid, a rectangle, a spindle shape, a fan shape, etc., or an appropriate combination of these shapes to form a solid body. As shown in FIG. 3, FIG. 7 to FIG. 10, and FIG. be.

Further, as shown in FIGS. 13 to 15, the shape of the repulsion elastic shock absorbing unit 4 is formed into a trapezoid, a rectangle, a spindle shape, etc., or an appropriate combination of these shapes,
It is also possible to form a recess 8 of an arbitrary shape on the outside of the resilient shock absorbing unit 4 in the foot length direction or the foot width direction.

In addition, in the present invention, the repulsion elastic shock absorption unit 4
The holes 7 or recesses 8 formed on the inside and outside of the foot, and the combination thereof, can be formed in the foot length direction or the foot width direction as necessary.

Furthermore, it is of course possible to use it in combination in both the foot length direction and the foot width direction.

Further, as for the shape of the repulsion elastic shock absorption unit structure of the present invention, it is also possible to form a protruding portion 4b on the main body portion 4λ of the repulsion elasticity shock absorption unit 4, as shown in FIGS. 3 and 11. .

In addition, from the point of view of the buffering effect, the effect is increased by forming the protruding portion 4b.

In addition, as for the method of arranging the repulsion elastic shock absorbing unit in the midsole or insole of the present invention, means such as adhesion or insert molding can be arbitrarily selected.

(Effects of the Invention) Since the present invention is configured as described below, it achieves the following effects.

That is, the midsole and insole itself have conventionally been made of commonly used materials such as EVA, polyurethane foam, thermoformed sponge, and other arbitrary materials, and have elastic members and shock absorbing members as a resilient shock absorbing unit.・Since it uses a body-shaped material, the former elastic member buffers the impact when landing while running, and at the same time generates repulsion elasticity, so it is called an elastic buffer. This allows the body to utilize the re-released energy, making it possible to continue exercising such as lanoning without getting tired, which has the effect of reducing fatigue.

On the other hand, the latter part of the shock absorbing member acts to absorb and alleviate fast vibrations that the body cannot absorb and have a negative impact on the body, so it becomes a so-called viscous buffer, which can cause so-called sports injuries that occur in the ankles and knees. This has the effect of significantly preventing.

Moreover, in the repulsion elastic shock absorption unit 4 of the present invention,
Since the repulsion elastic material and shock absorption material are integrated and used, it has not only a cushioning effect but also a repulsive force.
Since it has clearly different characteristic values from conventional EVA etc., for example, as shoes for short-distance events such as track and field, it is necessary to suppress the impact cushioning properties of the rebound elastic shock absorption unit.
It is possible to design the shape with emphasis on rebound resilience, and vice versa, which significantly increases the degree of freedom in design.

Further, the repulsion elastic shock absorbing unit to be attached to the midsole or insole of the present invention may remain solid without forming holes or four parts, but may have circular, triangular, square, or other shaped holes. By forming the concave portion, when impact stress occurs, the repulsive elastic shock absorbing unit itself deforms and re-releases energy when restoring to its original shape, so this restoring energy is used for kinetic action. If used effectively, the R effect will be even greater. Note that the shape of the hole formed in the inner part of the repulsive elastic shock absorbing unit 1 may be formed by penetrating the repulsive elastic shock absorbing unit 1, or if it is formed halfway through the repulsive elastic impact absorbing unit 1. Since it is also possible to buffer the impact stress, it is also possible to freely adjust the rebound resilience.

In addition, as in the present invention, the combination of the sole and insole with the repulsive elastic shock absorbing Uni-No. etc. can be changed relatively freely, and the degree of freedom in designing the shoe itself can be significantly increased. The present invention can be applied to running shoes, tennis shoes, basketball shoes, and other shoes.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing Minodosol according to the present invention, and FIG. 2 is a diagram Δ-12 showing Minodosol according to the present invention.
3 to 15 are cross-sectional views showing the cross section of the Δ portion.
4' perspective view showing other embodiments of the repulsion elastic shock absorbing UNISO h according to the present invention; 1 Midnor for Nokozu, 2
Step A, J{no part, 3 Heel part, 4: Repulsion elastic shock absorbing unit 1, 4a Main body part, 4b Projecting part, 5 Elastic part +4, 6 Shock absorbing member, 7 Hole, 8 Recess. j9 sect 73rd ta

Claims (1)

[Scope of Claims] 1. In a midsole or insole for shoes made of foamed synthetic resin, sponge, etc., the stepping part and heel part of the midsole or insole, or either of these. On the one hand, there is a resilient member made of a high resilience elastomer alloy having a JIS rebound resilience of 70% or more and a JIS A hardness of 25 to 40, and a rebound resilience member made of a high resilience elastomer alloy that has a JIS rebound resilience of 20% or less and a Shore A hardness of 25 to 80. 1. A shoe characterized by being equipped with a repulsion-resilient shock-absorbing unit formed by integrating a shock-absorbing member having characteristic values. 2. A claim in which the impact-absorbing member and the impact-absorbing member constituting the impact-resilient impact-absorbing unit are configured such that the impact-absorbing member is integrally bonded to the upper and lower surfaces or either one of the surfaces of the impact-resilient member. Shoes described in 1. 3. The structure of the repulsion elastic member and the shock absorbing member constituting the repulsion elastic shock absorption unit is a claim in which the repulsion elastic member is integrally bonded to the upper and lower surfaces of the impact absorption member, or to either one of the surfaces. Shoes described in 1. 4. The shoe according to claim 1, wherein the repulsion elastic member and the shock absorbing member constituting the repulsion elastic shock absorption unit are configured such that the impact absorption member is interposed and integrated inside the repulsion elastic member. 5. The shoe according to claim 1, wherein the repulsion elastic member and the shock absorbing member constituting the repulsion elastic shock absorption unit are integrated with each other with the repulsion elastic member interposed inside the shock absorption member. 6. At the stepping part, the repulsion elastic shock absorption unit has a shape that matches the area of the metatarsals, etc. that encompasses the balls of the big toes, and at the heel, it covers the heel area and has a shape that matches the outer circumference of the heel. Claims 1, 2, 3, 4 formed in a shape along
, 5 and 6. 7 The shape of the repulsion elastic shock absorption unit is trapezoid, rectangle,
Claims 1, 2, 3, 4, 5, and 6, which are formed in a spindle shape, a fan shape, or other appropriate combinations of these shapes.
Shoes listed. 8 The shape of the resilient shock absorption unit is trapezoidal, rectangular,
Claims 1 and 2, wherein the unit is formed in a spindle shape, a flat shape, or any other appropriate combination of these shapes, and a hole of an arbitrary shape is formed inside the repulsive elastic shock absorbing unit in the foot length direction or the foot width direction. Shoes according to items 3, 4, 5, 6 and 7. 9 The shape of the resilient shock absorption unit is trapezoidal, rectangular,
Claims 1, 2, 3, and 4, wherein the recess is formed in a spindle shape or other suitable combinations of these shapes, and a recess in an arbitrary shape is formed on the outside of the repulsive elastic shock absorbing unit in the foot length direction or the foot width direction. , 5, 6, 7 and 8. 10. The shoes according to claims 1, 2, 3, 4, 5, 6, 7, 8, and 9, wherein the shape of the resilient shock absorbing unit is such that a protruding portion is formed on the main body of the resilient shock absorbing unit.