KR102175877B1 - Shoes installing shock absorber, shock absorber used therein, and manufacturing method thereof - Google Patents

Abstract

The present invention provides shoes consisting of a sole, a midsole, and an upper. The shoes comprise: a hollow receiving portion formed between the sole and the midsole of a heel portion; and a shock mitigating device installed in the hollow receiving portion. The shock mitigating device is composed of a carbon fiber laminate, and has the vertical cross-section forming an elliptical closed curve. Provided are the shoes with the shock mitigating device, the shock mitigating device used thereto, and a manufacturing method thereof.

Description

Shoes equipped with a shock absorbing device, a shock absorbing device used therein, and a manufacturing method thereof {SHOES INSTALLING SHOCK ABSORBER, SHOCK ABSORBER USED THEREIN, AND MANUFACTURING METHOD THEREOF}

The present invention relates to a shoe equipped with an impact relief device, an impact relief device used therein, and a manufacturing method thereof.

In general, shoes are an object to protect the feet, and they absorb and mitigate external shocks transmitted to the feet. In shoes, in order to secure a more enhanced cushioning function, there is a combination of the material or structure of the shoe window or the use of a cushioning device as a separate part, but a method of securing an enhanced cushioning function by changing the material of the shoe window Because there is a certain limit, there has been active research on a method of enhancing the cushioning function by embedding a shock absorber in shoes.

As an example of a method of improving the cushioning function of such a shoe, there has been a method of installing an air bag or an air tube installed on the sole of a shoe, and a combination of a pad and a spring.

However, in the case of the air cushion according to the prior art, when the wearer walks or runs in the wrong posture, it plays a role of reinforcing the wrong posture. For example, when the wearer walks inclined to the right, a relatively strong pressure is applied to the right side of the air cushion of the shoe, and accordingly, a pressing force is applied to the left side, which is the opposite side. Accordingly, there is a problem in that the wearer who walks while inclined to the right becomes more inclined to the right.

* Related prior art

1. Korean Patent Registration No. 1508311 (announced on March 27, 2015)

2. Korean Patent Registration No. 1128295 (announced on March 13, 2012)

The present invention has been devised to solve the above-described problems, and has excellent elasticity, and when the wearer walks or runs, a shoe equipped with a shock mitigating device capable of giving the wearer an accurate repulsive force to allow the wearer to walk or run in a more correct posture It is an object of the present invention to provide a shock absorbing device and a method of manufacturing the same.

In order to solve the above object, a shoe having a shock absorbing device according to an embodiment of the present invention includes a shoe comprising a sole, a midsole, and an upper, comprising: a hollow receiving portion formed between the sole and the midsole of the heel portion; And a shock absorbing device installed in the hollow receiving portion, wherein the shock absorbing device is composed of a carbon fiber laminate, and a vertical cross section may form an elliptical closed curve.

Here, the ratio of the major axis and the minor axis of the elliptical pegged curve may be 4.5 to 5.5:1.

Here, the carbon fiber laminate includes a first carbon fiber layer having a first arrangement; And a second carbon fiber layer attached to an upper surface or a lower surface of the first carbon fiber layer and having a second arrangement.

Here, the first arrangement may be a parallel arrangement, and the second arrangement may be an inclination arrangement having an inclination angle of 30 to 60° with respect to the parallel arrangement.

Here, a plurality of the first carbon fiber layers and the second carbon fiber layers may be alternately stacked.

Here, the entire outer surface of the impact relief device may be in contact with the surface of the hollow receiving portion.

Here, the midsole, a first midsole attached to the sole and formed with a first sub hollow receiving portion; And a second midsole attached to the rear upper surface of the first midsole and having the second sub-hollow receiving part, wherein the first sub-hollow receiving part and the second sub-hollow receiving part are integrated to the hollow receiving part. Can be formed.

Here, the first midsole and the second midsole may be obliquely attached to the central portion of the shoe.

Another embodiment of the present invention, a shoe shock mitigating device inserted into the heel of a midsole of a shoe is composed of a carbon fiber laminate, and a vertical section may form an elliptical closed curve.

Here, the carbon fiber laminate includes a first carbon fiber layer having a first arrangement; And a second carbon fiber layer attached to an upper surface or a lower surface of the first carbon fiber layer and having a second arrangement.

Here, a plurality of the first carbon fiber layers and the second carbon fiber layers may be alternately stacked.

In another embodiment of the present invention, a method of manufacturing a shoe with a shock absorbing device may include: preparing a first midsole in which a first sub-hollow receiving portion is formed below the hollow receiving portion; Preparing a second midsole in which a second sub-hollow receiving part, which is an upper part of the hollow receiving part, is formed, the second midsole forming an upper part of a portion of the first midsole; Attaching the impact relief device to the first sub hollow receiving part; And allowing the lower surface of the second sub-hollow receiving portion to be attached to the upper surface of the shock absorber in a state in which the shock absorbing device is attached to the first midsole.

Here, the first midsole and the second midsole may be obliquely attached to the central portion of the shoe.

According to an embodiment of the present invention having the above-described configuration, a shock mitigation unit of an elliptical structure using carbon fiber, which is a component that is not only excellent in stiffness but also strong against fracture, is provided, so that even when a shoe wearer walks on a somewhat unbalanced foot , It has the advantage of mitigating the imbalance.

In addition, according to an embodiment of the present invention, a plurality of carbon fiber layers each having a first arrangement and a second arrangement are stacked to have sufficient rigidity not to be broken or damaged even by the impact applied to the shock mitigation unit during walking or running.

In addition, after the midsole is composed of the first and second midsoles, the manufacturing process is simplified and sufficient adhesion can be provided by attaching an elliptical impact relief unit to the hollow receiving portion formed by the first and second midsoles. Has an advantage.

1 is an exploded perspective view of a shoe having a shock mitigating device according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of a shoe equipped with an embodiment of the present invention, a shock absorbing device.
3 is a perspective view of a shock mitigating device according to another embodiment of the present invention.
Figure 4 is an exploded perspective view for explaining the first and second carbon fiber layers of the shock absorber according to another embodiment of the present invention.
Figure 5 is a flow chart for explaining a method of manufacturing a shoe having a shock absorbing device according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a shock absorbing unit and a shoe including the same according to a preferred embodiment of the present invention will be described in detail. In the present specification, the same/similar reference numerals are assigned to the same/similar configurations even in different embodiments, and the description is replaced with the first description.

FIG. 1 is an exploded perspective view of a shoe having an impact relief device 50 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a shoe including an impact relief device 50 according to an embodiment of the present invention. As shown in Figures 1 and 2, the shoe provided with the shock absorber 50 according to the present invention is largely composed of a sole 10, a midsole 20, and an upper 30, the midsole 20 A hollow receiving portion 40 is formed in the heel portion, and the shock absorbing device 500 is attached to the hollow receiving portion 40.

The sole 10 is a window attached to the bottom of a shoe, and is a component that is in direct contact with the ground, and is usually formed of a pattern to have a function of preventing slipping, and is made of a material having excellent durability.

The midsole (20) is a window located on the upper part of the sole (10), and is combined with the sole (10) to reinforce the durability of the shoe, and a layer is added to absorb and disperse the shock applied when the shoe wearer walks. to be. In the present invention, the midsole 20 includes a first midsole 21 and a second midsole 22, and the first midsole 21 is attached to the sole 10, and a first sub hollow receiving part at the rear 41 is configured to be formed, and the second midsole 22 is configured such that the first midsole 21 and the front surface are obliquely coupled, and a second sub hollow receiving portion 42 is formed. The first midsole 21 and the second midsole 22 are combined to form the hollow receiving part 40.

The upper 30 is an outer material surrounding the shoe, and is configured to protect the back of the foot and joints. Synthetic leather, natural leather, and the like may be used as the upper 30.

On the other hand, the first sub-hollow receiving portion 41 and the second sub-hollow receiving portion 42 formed by the combination of the hollow receiving portion 40 is attached to the shock absorbing device 50, the shock absorbing device 50 The entire outer surface of) is attached in contact with the surface of the hollow receiving part 40, and is composed of a carbon fiber laminate.

Carbon fibers are produced by firing many organic polymer fibers at about 1000 to 3000°C. Currently, they are produced from acrylic (polyacrylonitrile, PAN) fibers, pitch fibers, and liquid crystal pitch fibers. Among the specific strength and inelastic modulus, it is characterized by having a particularly high inelastic modulus, and it is a material that is light and does not deform well when hardened with resin. In the present invention, a highly oriented, anisotropic carbon fiber in which a mesh plane is arranged close to the fiber axis is used, and the highly oriented carbon fiber has a particularly high elastic modulus, and is a material that is more effective in reducing impact. By laminating and forming a plurality of carbon fiber layers made of such highly oriented carbon fibers, it has excellent inelasticity and does not cause cracking even under strong impact.

Hereinafter, the configuration of the shock absorber 50 will be described in more detail with reference to FIGS. 3 and 4.

3 is a cross-sectional view of an impact relief device 50 according to another embodiment of the present invention, and FIG. 4 is a cross-sectional view illustrating the first and second carbon fiber layers 51 and 52 of the impact relief device 50 according to another embodiment of the present invention. It is an exploded perspective view for.

The shock absorbing device 50 according to the present invention, as shown in FIG. 3, has a structure of an elliptical cross-section as a whole and has an elliptical closed curve in a vertical cross-section. And the front and rear are completely open. Looking at the cross section of the shock absorber 50 having such a shape, the ratio of the long axis (x) and the short axis (y) is composed of 4.5 to 5.5:1. This provides a repulsive force to the wearer while adequately absorbing the impact of the shoe, and has sufficient rigidity to the wearer's walking and running impact. If the ratio is lower than the above ratio, there is a possibility that the shock mitigation device 50 may be damaged by the wearer's walking and running shock, and if the ratio is higher than the ratio, adequate shock absorption is not achieved.

Such an impact reducing device 50 is composed of a carbon fiber laminate in which a plurality of highly oriented carbon fiber layers are stacked as described above. As shown in FIG. 4, the carbon fiber laminate has a form in which a first carbon fiber layer 51 having a first arrangement as a parallel arrangement and a second carbon fiber layer 52 having a second arrangement in an oblique arrangement are alternately stacked. And 8 to 12 carbon fiber layers are laminated.

Here, the inclined arrangement has an inclination angle of 30 to 60° with respect to the parallel arrangement. By configuring in this way, it is possible to prevent cracking due to grain even when using highly oriented carbon fibers.

Hereinafter, with reference to FIG. 5, a method of manufacturing a shoe having an impact mitigating device 50 according to another embodiment of the present invention will be described.

5 is a flow chart for explaining a method of manufacturing a shoe having an impact relief device 50, which is another embodiment of the present invention. Here, a description of a general shoe manufacturing method is omitted, and only characteristic manufacturing steps according to the present invention are described to simplify the description of the present invention.

As shown in FIG. 5, the first midsole 21 is prepared (S1). The first midsole 21 has a first sub-hollow receiving portion 41, which is a lower portion of the hollow receiving portion 40, formed on the heel side, as described with reference to FIGS. 1 to 4. Then, the second midsole 22 is prepared (S2). As described above, the second midsole 22 forms an upper portion of the midsole 20, and a second sub hollow receiving portion 42 is formed. Then, the shock relief device described in FIGS. 3 and 4 is attached to either the first midsole 21 or the second midsole 22 (S3). Then, in a state in which the shock absorbing device 50 is attached to the first midsole 21, the lower surface of the second sub-hollow receiving portion 41 is attached to the upper surface of the shock absorbing device 50. (S4). At this time, the first midsole 21 and the second midsole 22 are obliquely attached at the center of the shoe.

According to an embodiment of the present invention described above, an elliptical structure of a shock mitigation unit using carbon fiber, which is a component that is not only excellent in rigidity but also strong against fracture, is provided, so that even when a shoe wearer walks on a somewhat unbalanced walking, the imbalance It has the advantage of alleviating sex.

In addition, according to an embodiment of the present invention, a plurality of carbon fiber layers each having a first arrangement and a second arrangement are stacked to have sufficient rigidity not to be broken or damaged even by the impact applied to the shock mitigation unit during walking or running.

In addition, after the midsole is composed of the first and second midsoles 22, the manufacturing process is simplified by attaching an elliptical impact relief unit to the hollow receiving portion formed by the first and second midsoles 22, It has the advantage of providing sufficient adhesion.

Shoes having the above-described shock absorbing device, the shock absorbing device used therein, and a manufacturing method thereof are not limited to the configuration and operation method of the above-described embodiments. The above embodiments may be configured so that all or a part of each of the embodiments may be selectively combined and various modifications may be made.

10: outsole
20: midsole
30: upper
40: hollow receiving part
50: shock absorber

Claims (13)

In the shoe consisting of a sole, a midsole and an upper,
A hollow receiving portion formed between the outsole and the midsole of the heel portion;
Including a shock absorbing device installed in the hollow receiving portion,
The shock absorbing device,
It is composed of a carbon fiber laminate, and the vertical section forms an elliptical closed curve,
The ratio of the long axis and the short axis of the elliptical peg curve is 4.5~5.5:1, so that the impact of the shoe is adequately absorbed and the repulsive force is provided to the wearer, and sufficient rigidity is provided for the wearer's walking and running impact,
The carbon fiber laminate,
A first carbon fiber layer having a first arrangement; And
It is attached to the upper surface or the lower surface of the first carbon fiber layer, and includes a second carbon fiber layer having a second arrangement having an inclination angle of 30 to 60 degrees to the first arrangement to prevent cracking due to grain, including a shock mitigating device One shoe.
delete delete delete The method of claim 1,
The first carbon fiber layer and the second carbon fiber layer are alternately laminated in plurality.
The method of claim 1,
A shoe with a shock absorbing device, wherein the entire outer surface of the shock absorbing device is in contact with the surface of the hollow receiving portion.
The method of claim 1,
The midsole,
A first midsole attached to the sole and having a first sub hollow receiving part formed thereon; And
It is attached to the upper surface of the rear side of the first midsole, and includes a second midsole in which the second sub-hollow receiving part is formed, and the first sub-hollow receiving part and the second sub-hollow receiving part are integrated to form the hollow receiving part. Shoes with a shock absorbing device.
The method of claim 7,
The first midsole and the second midsole are obliquely attached to the central portion of the shoe, a shoe having a shock absorbing device.
It is composed of a carbon fiber laminate, and the vertical section forms an elliptical closed curve, a shoe shock mitigation device inserted into the heel of the shoe's midsole.
The method of claim 9,
The carbon fiber laminate,
A first carbon fiber layer having a first arrangement; And
A shoe shock absorbing device that is attached to an upper or lower surface of the first carbon fiber layer, and includes a second carbon fiber layer having a second arrangement.
The method of claim 10,
The first carbon fiber layer and the second carbon fiber layer are alternately stacked in a plurality of layers, A shoe shock mitigating device inserted into the heel portion of the midsole of the shoe.
As a method of manufacturing a shoe having the shock absorbing device disclosed in claim 1,
Preparing a first midsole in which a first sub-hollow receiving portion is formed below the hollow receiving portion;
Preparing a second midsole in which a second sub-hollow receiving part, which is an upper part of the hollow receiving part, is formed, the second midsole forming an upper part of a portion of the first midsole;
Attaching the impact relief device to the first sub hollow receiving part;
In a state in which the shock absorbing device is attached to the first midsole, making the lower surface of the second sub-hollow accommodating portion attached to the upper surface of the shock absorbing device; including, manufacturing a shoe with a shock absorbing device. Way.
The method of claim 12,
The first midsole and the second midsole are obliquely attached to the central portion of the shoe, a method of manufacturing a shoe having a shock absorbing device.

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