KR101192835B1 - Shoe midsole having centroid hold and absorbing shock and shoe with the same - Google Patents

Abstract

The present invention relates to a shoe midsole (midsole) having a central maintenance and shock absorbing function and a shoe having the same, and in particular, unlike the conventional midsole in which a separate shock absorber is inserted, the central maintenance through the change of the shape of the midsole Alternatively, the shock absorbing function can be implemented, and by measuring and analyzing the change of vertical and horizontal contact loads, the horizontal acceleration change, and the horizontal shear displacement of the midsole, the optimal midsole shape can be derived and applied to the shoes. The present invention relates to a shoe midsole having a central maintenance and shock absorbing function capable of reducing production costs, maintenance costs, etc., and improving robustness while implementing an absorption function and simplifying the production process and its structure.

Description

Shoe midsole having centroid hold and absorbing shock and shoe with the same}

The present invention relates to a shoe midsole (midsole) having a central maintenance and shock absorbing function and a shoe having the same, and more specifically, unlike the conventional midsole in which a separate shock absorber is inserted, the center through the change of the shape of the midsole Implement the maintenance or shock absorption function, but by measuring and analyzing the change of vertical and horizontal contact load, horizontal acceleration change and horizontal shear displacement of midsole, deriving the optimum midsole shape and applying it to shoes, maintaining excellent center And a midsole for footwear having a central maintenance and shock absorbing function capable of reducing the production cost, maintenance cost, etc. and improving the robustness by implementing a shock absorbing function and simplifying the production process and its structure. .

It is well known that human walking is the absolute reason for evolution today. However, by wearing a shoe for maintaining a simple fashion for the foot that has maintained this evolution has resulted in the deterioration of the function of the foot and development of the foot. This lowered the basic walking ability and exercise ability and caused the important disease caused by the foot.

The foot consists of 26 large and small bones, which are supported by ligaments and muscles. In addition, the foot has a domed arch, and absorbs the impact of the center of gravity and weight when stepping on the foot.

On the other hand, the most deformation of human growth is the toe and dome-shaped arches. Especially, the dome-shaped arches deform and grow (collapsing, flat feet, and crow's feet) are the collapse of the skeleton that can absorb the center and the impact. This can also be a cause of important illnesses caused by the feet.

Therefore, research on shoes that can supplement the center of the foot and the shock absorption function is actively being conducted.

Hereinafter, a description will be given of the analysis of the center of the foot and shock absorption of the general foot, and the prior art for implementing the center of gravity and shock absorption.

First, with regard to maintaining the center of gravity, the general analysis of the walking behavior of the foot is: first, the outside of the heel touches the ground, rolls the foot forward, then the toes meet on the ground, and finally the heel is lifted from the ground and the foot is pulled forward Movement occurs as you build.

That is, the foot is rotated downward and causes pronation when it touches the medial ground. This is a normal process.

However, due to wearing wrong shoes that do not take into consideration the characteristics of the foot or exercise, excessive pronation occurs during walking or exercise, and in some cases, supination. In other words, the foot is unable to stay centered.

This results in damage to the feet, especially in the lower extremities, knees and back.

In this way, insoles are inserted to compensate for deviations from the center of the foot. However, individual characteristics cannot be applied depending on mass production by the average value, and thus have limitations of supplementation.

The limitation of this supplement causes malformation growth of the shoe wearer and causes many side effects such as an increase in discomfort to other parts.

On the other hand, the inner arch of the foot is partially damaged or discomfort, such as pain in other areas, using individual customized insoles for rehabilitation or correction, or by inserting additional aids in existing shoes to improve the completion of the complement. However, in this case, the degree of abnormal symptoms in the foot is more advanced than the early stage, and is not a preventive measure in advance.

It is true that foot problems can be prevented in part by early detection of abnormal symptoms or by correction of walking methods if symptoms are not severe. However, if you continue to wear the wrong shoes that do not match the walking characteristics of the foot, the basic prevention is difficult, and the underlying problems.

In order to solve the above problems, the Republic of Korea Patent Publication No. 10-2002-0007412, as shown in Figures 1 and 2, when walking with a bladder system (1) in the midsole of the shoe, excessive rotation Proposed shoes that can maintain the center by preventing civil war and abduction.

The bladder system 1 constitutes bladder chambers 4, 5, 6 which are in communication with each other by conduits 2, 3, and have valves 7, 8 in the conduits 2, 3. As a result, the valves 7 and 8 operated by the load generated during walking adjust the pressure in the bladder chambers 4, 5 and 6 to suppress excessive internal and external rotation.

However, the bladder system 1 as described above has a problem in that the structure of the shoe, the conduit, the valve, and the like is complicated, so that the production process of the shoe is not only complicated, but also the production cost and maintenance cost are increased. In addition, due to the characteristics of the chamber made of a conventional polyurethane film, when excessive load and impact is applied, it is easily broken (torn, torn), there is a problem that causes more center deviation.

Second, in terms of shock absorption, the general foot walking analysis shows that if a person weighing about 60 kg walks on an average of 6000 steps per day, the foot weighs about 432 tons, which exceeds the weight of a typical airplane (about 400 tons). Load.

That is, it can be seen that the amount of impact applied to the foot in walking or running is larger than expected, and when the amount of impact is not reduced as described above, a degenerative change occurs in the joint.

In order to solve the above problems, Korean Utility Model Registration No. 20-0176002 proposed a shock-absorbing shoes to absorb the shock by mounting a spring in the midsole portion of the shoe.

However, the prior art as described above should be manufactured by injection molding the upper pad, the lower pad, and the spring into a separate mold, and then manufacturing the upper pad, the lower pad, and the spring storage through-hole by high frequency or bond bonding. Therefore, the production process and its structure is complicated, there was a problem that the production cost and maintenance costs increase.

In addition, Korean Patent Laid-Open Publication No. 10-2003-0072277 proposed a shoe shock alleviating shock absorber to mitigate the impact by mounting the coil spring on the midsole of the shoe.

However, the prior art as described above has a problem in that the coil spring is pulled out of the flange when the coil spring is compressed or inflated, or the spring itself is broken, and there is a problem that the shock absorber can be installed in the midsole when manufacturing shoes. Since the midsole with the storage compartment and the separate storage compartment must be manufactured after the midsole is manufactured, the shock absorber must be installed separately. There was a problem that the maintenance cost increases.

In addition, the Republic of Korea Patent Publication No. 10-2006-0002402 relates to a shock absorbing device that is inserted into the midsole, the upper and lower portions formed with a plurality of spring fixing protrusions for fixing the coil spring on the inner surface of the pad corresponding to each other Pads and bottom pads; A coil spring fixed to the spring fixing protrusions of the upper and lower pads; And an outer air cover configured to wrap an outer pad of the upper pad and the lower pad to form an air chamber in which air is filled.

However, in the case of forming an outer air cover filled with air by wrapping the upper pad and the lower pad in the shoe as in the prior art as described above, after combining the upper and lower pads, separate the outer air cover using a synthetic resin. There was a problem that production cost and maintenance cost increased due to the complicated production process such as forming work, and also, the cushioning device combined with upper and lower pads was sealed with a separate synthetic resin in the process of manufacturing a separate air cover. After that, the air cover was manufactured by high frequency adhesive method, but the air cover manufactured by high frequency adhesive method wrapped in a separate synthetic resin was not reliable because the air cover itself was torn and broken or air leaked.

In addition, Korean Patent Laid-Open Publication No. 10-2006-0007941 relates to a shock absorber inserted into a midsole, through which a relaxation preventing wire penetrates inside the coil spring and fixes both ends of the relaxation preventing wire to the upper pad and the lower pad. A shock absorber shock absorber that can prevent the spring from falling off the pad was proposed.

However, the prior art as described above, when mounting the anti-seam wire inside the coil spring to fix to the upper pad and the lower pad, there was a problem in the rigidity, such as the break-resistant wire itself is broken or expanded, as well as springs the anti-seam wire There was a problem in that the production process and the structure is mounted on the inside is complicated to increase the production cost and maintenance costs.

In summary, the conventional techniques for implementing the function of maintaining the center and the shock absorber has a separate device in the midsole, the production process and its structure is complicated, not only increases the production cost, maintenance cost, but also can be reliable There was no problem.

Therefore, in order to solve the above problems, as shown in FIGS. 3 and 4 (a) to (c), the projections 21a and 21b for maintaining the center and absorbing shock are formed in the midsole 10. By integrally 'molding', a midsole has been developed that simplifies the production process and its structure and improves the robustness while partially implementing the center holding and shock absorption functions.

However, as a result of experiments by the inventors of the present patent application, Figures 3 and 4 (a) to (c), which is another embodiment of FIG. 3, can implement a simplified production process and structure, but the central maintenance and It was found through experiments (see FIGS. 9 to 11) that the structure is unstable to implement the shock absorbing function.

Therefore, the present invention, unlike the conventional midsole in which a separate shock absorber is inserted, implements the function of maintaining the center or shock absorbing through the change of the shape of the midsole, the vertical and horizontal contact load change of the midsole (see Fig. 9), horizontal acceleration By measuring and interpreting the change (see Fig. 10) and the change in the horizontal shear displacement (see Fig. 11), the optimum midsole shape is derived and applied to the shoe, thereby realizing excellent centering and shock absorption functions, To simplify the structure, to reduce the production cost, maintenance costs and the like, and to provide a shoemaker with a shoe sole having a central maintenance and shock absorbing function that can improve the robustness and the same.

In the shoe midsole, a shoe midsole having a center holding and a shock absorbing function integrally formed with a rear foot control block at an inner end of the midsole is a means for solving the problem.

In addition, the shoe is provided with a shoe midsole for maintaining the center and the shock absorption function as a means of solving the other problem.

On the other hand, the rear control block is preferably formed in the transverse direction with respect to the running direction of the shoe.

인 것이 바람직하다.Further, the rear control block has a longitudinal cross-sectional shape.

Is preferably.

In addition, a shank may be selectively inserted into an upper surface of the rear control block.

According to the present invention, therefore, while maintaining the center or shock absorbing function through the change of the shape of the midsole, the optimum midsole by measuring and analyzing the change of the vertical and horizontal contact load, the horizontal acceleration change, and the horizontal shear direction displacement of the midsole By deriving the form and applying it to the shoe, while implementing excellent center maintenance and shock absorption function, there is an advantage that can simplify the production process and its structure to reduce production costs, maintenance costs, etc. and improve the robustness.

1 is an exploded perspective view of a midsole equipped with a conventional center holding system
2 is a detailed view of the central holding system of FIG.
Figure 3 is a perspective view of a shoe midsole having a conventional center and shock absorbing function
4 is a partial perspective view of a shoe midsole according to another embodiment of FIG.
Figure 5 is a perspective view of a shoe midsole having a central maintenance and shock absorbing function according to an embodiment of the present invention
6 is a cross-
7 is a partial perspective view of FIG. 5
8 is a view showing a shoe to which the midsole of FIG. 5 is applied
9 is a graph showing the change in the vertical and horizontal contact load of each midsole according to FIGS. 4 and 7
10 is a graph showing the change in each horizontal acceleration according to FIGS. 4 and 7
11 is a graph showing a change in each horizontal shear direction displacement according to FIGS. 4 and 7

The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and effect of the preferred embodiment of the present invention.

5 is a perspective view of a shoe midsole having a center holding and shock absorbing function according to an embodiment of the present invention, FIG. 6 is a cross-sectional view of FIG. 5, FIG. 7 is a partial perspective view of FIG. 5, and FIG. 8 is FIG. 5. The figure shows a shoe with a midsole.

That is, in the present invention, as shown in FIG. 5, the rear foot control block 24 is integrally formed at one inner end of the shoe midsole 20.

Therefore, unlike the conventional midsole in which a separate shock absorber is inserted, by implementing a central maintenance or shock absorbing function through the change of the shape of the midsole, the production process and its structure are simplified to reduce the production cost, maintenance cost, etc. Improve.

으로 형성되는 것이 바람직하다.
In addition, the rear control block 24 is formed in the transverse direction with respect to the running direction of the shoe, as shown in Figure 5, as shown in Figure 6 and 7, the longitudinal cross-sectional shape

It is preferable to form.

) 등은 미드솔의 수직 및 수평 접촉하중 변화, 수평 가속도변화, 수평 전단방향 변위의 변화를 측정하고 해석하여 도출된 것으로, 상기 각 측정 결과 및 분석에 대한 상세한 설명은 후술하기로 한다.As described above, the formation direction (lateral direction) of the rear foot control block 24 of the present invention, the cross-sectional shape (

) Is derived from the measurement and analysis of changes in vertical and horizontal contact loads, changes in horizontal acceleration, and changes in horizontal shear direction of the midsole, which will be described in detail later.

Therefore, by applying the shoe midsole having a central maintenance and shock absorbing function according to the present invention to the shoe, as shown in Figure 8, it is possible to implement the excellent center maintenance and shock absorbing function.

In addition, a general shank 40 for maintaining the shape of the midsole 20 and supporting the foot may be inserted into the upper surface of the rear control block 24.

FIG. 9 is a graph showing vertical and horizontal contact load changes of each midsole according to FIGS. 4 and 7, FIG. 10 is a graph illustrating changes in horizontal acceleration according to FIGS. 4 and 7, and FIG. 11 is a view showing FIGS. 4 and 7. 7 is a graph showing the change in displacement in each horizontal shear direction according to the present invention, which is a conventional midsole (FIG. To compare the central maintenance and shock absorbing function of the midsole according to the embodiment.

Here, Figure 4 (a) is Comparative Example 1, Figure 4 (b) is Comparative Example 2, Figure 4 (c) is Comparative Example 3, the midsole of Figure 7 according to the invention was defined as Example 1. .

In Comparative Example 1, a circular columnar protrusion 21a is integrally formed in the midsole 20, and a soft pad 22a is inserted into the lower portion of the protrusion 21a. The projection 21b having a circular columnar shape is integrally formed in the midsole 10, and Comparative Example 3 is the same as that of Comparative Example 2, but below the projection 21b, 1 / of the projection 21b. It is a form in which the soft pad 22b which has two heights was formed.

In addition, the first embodiment is formed by integrally forming the rear end control block 24 in the form of a block instead of the circular pillar-shaped protrusions 21a and 21b inside the midsole 10.

On the other hand, the upper surface and the lower surface of Comparative Examples 1 to 3 and Example 1 to form a conventional insole (10) and outsole (outsole) (30), the normal shank 40 is inserted.

As a result of measuring the vertical and horizontal contact load changes (change in vertical shear reaction force) according to time change by cutting a portion of the midsole according to each of the comparative examples and examples (see the 'interpretation range' of FIG. 6), FIG. As shown, the shear reaction force was calculated the largest in Comparative Example 1 and Example 1.

In Comparative Example 2 and Comparative Example 3, the time for increasing and decreasing the load was relatively long and the shear reaction force was low.

Therefore, in Comparative Example 2 and Comparative Example 3, it can be seen that the magnitude of the reaction force is unstable compared to Comparative Example 1 and Example 1, the constant increase and then decreases in the middle.

Looking at the change in the horizontal acceleration with the change of time can again confirm the above characteristics. That is, as shown in Figure 10, Comparative Example 2, Comparative Example 3, but the acceleration is severely changed, in the case of Comparative Example 1 and Example 1 can confirm the increase and decrease of the stable acceleration, so that the pedestrian is centered while walking It can be seen that it is advantageous to maintain.

In addition, as a result of confirming the change in the horizontal displacement according to the change in time, as shown in FIG. 11, in the case of Comparative Example 1, Comparative Example 2, Comparative Example 3, the deformation continues to advance in the shear direction with time On the other hand, in the case of Example 1 it can be seen that after the maximum deformation gently moves in the opposite direction of the impact.

In addition, the deformation amount at the maximum acceleration point was the largest comparative example 2, the smallest deformation amount in the order of Comparative Example 3, Comparative Example 1, Example 1.

Small shear deformation can be interpreted as having a more stable structure for left and right impacts.

Therefore, the shape of Example 1 can be confirmed that the structure is stable to the vertical, horizontal loads compared to Comparative Examples 1 to 3 of the existing shape, and accordingly, the midsole of Example 1 than Comparative Examples 1 to 3 It can be seen that the structure to implement a more excellent center holding and shock absorbing function.

In summary, the shoe midsole having a center holding and shock absorbing function according to the present invention, unlike the conventional midsole in which a separate shock absorber is inserted, implements the center holding or shock absorbing function by changing the shape of the midsole, By measuring and interpreting vertical and horizontal contact load changes (see Fig. 9), horizontal acceleration changes (see Fig. 10), and changes in horizontal shear displacement (see Fig. 11) to derive the optimal midsole shape and apply them to the shoe, By simplifying the production process and its structure, it is possible to reduce production costs, maintenance costs, etc., and improve the robustness, while also providing excellent center holding and shock absorption functions.

The present invention is not limited to the above-described embodiments and the accompanying drawings, and various changes, modifications and variations may be made without departing from the scope of the present invention. Will be apparent to those of ordinary skill in the art.

10: Insole 20: Midsole
21a, 21b: projection 22a, 22b: pad
24: Rear control block 30: Outsole
40: shank

Claims (5)

In the shoe midsole,
A rear control block is integrally formed at one end of the midsole,
Midsole for shoes having a central maintenance and shock absorption function, characterized in that the shank is inserted into the upper surface of the rear control block.
The method of claim 1,
The rear control block,
Midsole for shoes having a central maintenance and shock absorption function, characterized in that formed in the transverse direction with respect to the running direction of the shoe
The method of claim 1,
The rear control block,
Longitudinal cross section shape

Midsole for shoes having a central maintenance and shock absorption function, characterized in that

delete  Shoes provided with a midsole for shoes having a central maintenance and shock absorbing function according to any one of claims 1 to 3.

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