JPH079105U - Sports shoes - Google Patents

Abstract

(57) [Summary] [Purpose] To improve stability while maintaining excellent impact relaxation properties. [Structure] Two cavities 6 adjacent to an inside line I and an outside line O are provided in a heel portion H of a midsole 4 forming a sole surface portion S of a shoe body 1, and a silicone bouncing putty 5 is provided in these cavities. Was filled.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sports shoe which has improved stability and exercise characteristics while maintaining the excellent shock absorbing characteristics of the sole surface portion.

[0002]

[Prior art]

 Conventionally, in sports shoes, for the purpose of mitigating impact during exercise, for example, a cavity is provided in a heel portion of a midsole that forms a shoe sole substrate (sole surface portion) of a shoe body, and a gas, for example, is provided in the cavity. By filling an enclosed bag or a gel-like substance with the same shape as the cavity, and using the material characteristics (compression characteristics) of these gases and gel-like substances, the impact at the time of landing can be absorbed. , Some have a structure designed to reduce the load on the joints of the ankles and knees.

[0003]

[Problems to be solved by the device]

 However, in the case of a sports shoe with a conventional structure that merely absorbs impacts as described above, if the impact absorption characteristics are enhanced, sudden stoppages may occur in sports with high movements such as basketball, volleyball, and soccer. When the direction is changed, the midsole 4 is compressed and deformed together with the shock absorbing member 10 as shown in FIG. 7 due to a large force applied to the shoe sole, which changes the thickness of the shoe sole in the front-rear direction or the left-right direction. In other words, there is a problem that the flatness of the sole of the shoe is impaired during exercise, resulting in instability, so that the ankle or the like is easily damaged.

Also, even if the ground is kicked with a strong force when performing a side step or a dash, this force is absorbed due to deformation of the shock absorbing member of the midsole, and this leg force is absorbed through the shoe sole. There was also the drawback that it could not be transmitted to the ground, and that it could not be expected to fully exercise athletic ability.

[0007] Furthermore, in golf shoes as well, if the shock absorbing characteristics are improved in order to improve comfort, the shock absorbing member of the midsole is compressed and deformed due to the movement of the weight during a swing. It was causing the swing.

On the other hand, when it is attempted to obtain excellent stability, the deformable range of the midsole is eventually narrowed, and in such a structure, the shock absorbing characteristics that the midsole should originally have are sacrificed. There was a flaw.

[0007]

[The purpose of the device]

 An object of the present invention is to provide a sports shoe capable of improving stability and exercise characteristics while maintaining excellent impact relaxation characteristics.

[0008]

[Means for Solving the Problems]

 This invention is intended for sports shoes in which a midsole is interposed between an inner sole and an outsole forming the sole surface portion as described above,

A first structure in which a hollow portion is provided in the midsole, and the hollow portion is filled with silicone bouncing putty,

A second structure in which a plurality of hollow parts of the first structure filled with silicone bouncing putty are provided close to the inside line and the outside line of the shoe, respectively.

A plurality of cavities of the above-mentioned first structure, which are filled with silicone bouncing putty, are provided in the heel part and the toe space part of the midsole in proximity to the inside line and the outside line of the shoe, respectively. And a third configuration,

By providing sports shoes each of which is provided with the above, the problems of the above-mentioned conventional techniques can be solved.

[0013]

[Action]

 The silicone bouncing putty filled in the cavity of the midsole is a mixture of silica as a filler in the reaction product of dimethyl polysiloxane and borate, and when the acting force is small, it behaves like a liquid. It has a peculiar property that behaves like a rigid body with a large coefficient of restitution when a large force is exerted, so during normal walking, the force of the foot to be stepped on is dispersed and received by the entire sole,

[0014] During vigorous motions such as stop and dash, the presence of silicone bouncing putty in the midsole cavity that acts like a rigid body improves leg stability and improves stability, and the strong force applied from the foot is lost. Since it is transmitted to the ground, etc., it exhibits excellent motion characteristics.

Particularly, in the case where a plurality of hollow portions filled with silicone bouncing putty are provided close to the inside line and the outside line of the shoe, respectively, the impact is reduced at the center of the heel and the like. Since the function of the midsole as a layer is exerted as it is, it has the effect of mitigating the shock received when moving around violently such as stop and dash, excellent stability, and good leg strength on the ground etc. The transfer characteristics are simultaneously satisfied.

[0016]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the drawings. FIGS. 1 to 4 show a first embodiment of a sports shoe according to the present invention, and reference numeral 1 in the drawing denotes a shoe body.

As shown in FIG. 1, the sole surface portion S forming the shoe sole substrate of the shoe body 1 has an outsole 2 and an inner sole 3, and an intermediate layer between the outsole 2 and the inner sole 3. And is composed of, for example, a foam midsole 4 made of ethylene-vinyl acetate copolymer (EVA), compression molded EVA, foaming urethane, foaming rubber, etc., which functions as an impact relaxation layer. As shown in FIG. 2, in the heel portion H of the sole 4, two hollow portions 6 filled with the silicone bouncing putty 5 are independently provided close to the inside line I and the outside line O, respectively. Has been formed.

The silicone bouncing putty 5 filled in the cavity 6 is a reaction product of dimethylpolysiloxane and borate with silica as a filler, and behaves like a liquid when the acting force is small. It has a peculiar property that behaves like a rigid body with a large coefficient of restitution when the acting force is large.

To fill the cavity 6 of the midsole 4 with the silicone bouncing putty 5 having the above characteristics, for example, as shown in FIG. 3, an opening is formed on the upper surface of the midsole 4, that is, on the side facing the inner sole 3. The cavity 6 is formed so as to have 61, the cavity 6 is filled with the silicone bouncing putty 5, and then the inner sole 3 and the midsole 4 are bonded together.

Before the inner sole 3 and the midsole 4 are attached to each other, the opening 61 may be sealed in advance by a lid member (not shown) which is the same as or different from the midsole 4. Further, an opening of the cavity 6 is formed on the lower surface of the midsole 4, that is, on the side facing the outsole 2, and the cavity 6 is filled with the silicone bouncing putty 5. It is also possible to bond the above with each other or to seal with an appropriate lid member.

Alternatively, the silicone bouncing putty 5 may be filled in a bag such as a polymer film in advance and inserted into the cavity 6 of the midsole 4 in this state.

By the way, 7 is another hollow portion independently provided in the center portion of the heel portion H of the midsole 4 which is different from the two hollow portions 6, and this hollow portion 7 is filled with gas. A shock absorbing member 10 appropriately selected from a bag body, a gel-like substance, a fibrous elastic substance and the like is filled, and the function of the midsole 4 as a shock absorbing material is further enhanced.

Therefore, in the sports shoe having the above-described configuration according to the present invention, the force of the foot to be stepped on is the elasticity of the midsole 4 itself and the hollow portion 7 in a normal walking motion in which a large load is not applied to the sole. Due to the action and effect of the shock absorbing member 10 filled in the inner part of the shoe, and the action similar to the liquid of the silicone bouncing putty 5 filled in the cavity 6, the sole is softly received.

On the other hand, during a heavy operation such as a stop and dash where a heavy load is applied, the silicone bouncing putty 5 filling the left and right cavities 6 of the midsole 4 acts like a rigid body having a large coefficient of restitution. As shown in FIG. 4, the lateral thickness of the shoe sole does not change even if a strong lateral load is applied. For this reason, not only is the stability enhanced by stability, but it is also possible to kick the ground as it is with the strong force applied from the foot, so excellent exercise characteristics are exhibited.

Moreover, since the hollow portion 7 filled with the shock absorbing member 10 is provided at the center of the heel portion H of the midsole 4, the function of the midsole 4 as a shock absorbing material is fully exerted. Therefore, at the same time, the effect of mitigating the impact received when moving around violently such as stop and dash, excellent stability, and good transmission characteristics of leg strength to the ground are satisfied at the same time.

FIG. 5 shows a second embodiment of the sports shoe according to the present invention. In this embodiment, between the fingertip side of the midsole 4 and the arch, that is, in the toe space portion T. Also, in this case, two cavity portions 8 similar to the cavity portion 6 provided in the heel portion H are formed independently of each other in the vicinity of the inside line I and the outside line O, respectively, as shown in FIG. The hollow portion 8 is also filled with the silicone bouncing putty 5 having the above-mentioned characteristics to improve stability and lossless transmission of leg force not only in the heel portion H but also in the toe space portion T.

FIG. 6 shows a third embodiment of the sports shoe according to the present invention. In this embodiment, a hollow portion 9 is formed in the entire toe space portion T of the midsole 4. The silicone bouncing putty 5 is filled in this portion, so that it is possible to apply a concentrated force in the toe space portion T.

[0028]

[Effect of device]

 As is clear from the above description, in the sports shoe of the present invention, the cavity portion provided in the midsole forming the sole surface portion of the main body of the shoe is filled with the silicone bouncing putty.

During normal walking, the stepping force is dispersed and received softly over the sole of the shoe, but the silicone that fills the hollow part of the midsole is used during heavy movements such as stop and dash where a heavy load is applied. Since the bouncing putty acts like a rigid body with a large coefficient of restitution, the thickness of the sole does not change even when a strong load is applied in any direction. For this reason, not only is the stability enhanced by stability, but it is also possible to kick the ground as it is with a strong force applied from the foot, so excellent exercise characteristics are exhibited.

Particularly, in the case where the cavity filled with the silicone bouncing putty is provided close to the inside line and the outside line of the midsole, as a shock absorbing layer at the center of the heel and the like. Since the function of the midsole of the car is exerted as it is, it has the effect of mitigating the shock received when moving around violently such as stop and dash, excellent stability, and good transmission characteristics of leg strength to the ground etc. Are satisfied at the same time.

[Brief description of drawings]

FIG. 1 is a side view of a notched state of essential parts showing a first embodiment.

FIG. 2 is an explanatory diagram of a midsole used in the first embodiment.

FIG. 3 is an explanatory view showing a filling procedure of a silicone bouncing putty.

FIG. 4 is an explanatory view showing the function of the shoe sole in the first embodiment.

FIG. 5 is an explanatory view showing a second embodiment.

FIG. 6 is an explanatory view showing a third embodiment.

FIG. 7 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

1 ... shoe body, 2 ... outsole, 3 ... inner sole, 4 ... midsole, 5 ... silicone bouncing putty, 6/7/8/9 ... cavity part, 10 ... shock absorbing member,
I ... Inside line, H ... Heel part, O ... Outside line, S ... Sole surface part, T ... Toe space part.

Claims (3)

[Scope of utility model registration request] 1. A sports shoe having a midsole interposed between an inner sole and an outsole forming a sole surface portion of a shoe body, wherein the midsole is provided with a cavity, and the cavity is filled with a silicone bouncing putty. Sports shoes that are characterized. 2. A sports shoe having a midsole interposed between an inner sole and an outsole forming a sole surface portion of a shoe body, wherein a heel portion of the midsole has a hollow portion adjacent to an inside line of the shoe. , Sports shoes characterized by having cavities close to the outside line, and filling these cavities with silicone bouncing putty. 3. A sports shoe having a midsole interposed between an inner sole and an outsole that form a sole surface portion of the shoe body, wherein the heel portion and the toe space portion of the midsole are each provided with an inside line of the shoe. A sports shoe characterized in that a cavity portion adjacent to the outside line and a cavity portion adjacent to the outside line are provided, and these cavity portions are filled with silicone bouncing putty.