KR-20260062344-A - A midsole for shoes with a centralized and shock-absorbing function, and shoes with the same

Abstract

The present invention relates to a midsole for shoes having center-maintaining and shock-absorbing functions and a shoe equipped with the same. Specifically, unlike conventional midsoles that incorporate a separate shock-absorbing device, the invention achieves center-maintaining or shock-absorbing functions through changes in the shape of the midsole. By measuring and analyzing changes in vertical and horizontal contact loads, horizontal acceleration, and horizontal shear displacement of the midsole to derive an optimal midsole shape and applying it to the shoe, the invention enables excellent center-maintaining and shock-absorbing functions while simplifying the production process and structure to reduce production and maintenance costs and improve durability. The invention thus relates to a midsole for shoes having center-maintaining and shock-absorbing functions and a shoe equipped with the same.

Inventors

• 오진현

Assignees

• ㈜핀프로젝트코리아

Dates

Publication Date

20260507

Application Date

20241029

Claims (1)

1. Regarding midsoles for shoes, A shoe midsole having center-maintaining and shock-absorbing functions, characterized by having a rear foot control block integrally formed on an inner end of the above midsole.

Description

A midsole for shoes with a centralized and shock-absorbing function, and shoes equipped with the same The present invention relates to a midsole for shoes having center-maintaining and shock-absorbing functions and a shoe equipped with the same. More specifically, unlike a conventional midsole with a separate shock-absorbing device inserted, the invention implements center-maintaining or shock-absorbing functions through a change in the shape of the midsole, and derives an optimal midsole shape by measuring and analyzing changes in vertical and horizontal contact loads, changes in horizontal acceleration, and changes in horizontal shear displacement of the midsole, and applies this to a shoe. This enables excellent center-maintaining and shock-absorbing functions while simplifying the production process and structure to reduce production costs, maintenance costs, etc., and improves durability. It is a well-known fact that human walking ability is the absolute reason for the evolution achieved today. However, wearing shoes merely for the sake of style has led to a decline in foot function and the development of foot deformities, despite the feet having sustained this evolution. This has reduced basic walking and motor skills and has become the cause of major foot-related diseases. The foot is composed of 26 large and small bones, which are supported by ligaments and muscles. Additionally, the foot has a dome-shaped arch that serves to maintain balance and absorb the impact of body weight when stepping. Meanwhile, the toes and the dome-shaped arch undergo the most deformation during human growth, and in particular, the deformed growth of the dome-shaped arch (collapse, flat feet, toe-footing) involves the collapse of the skeleton capable of maintaining balance and absorbing shock, which can also be the cause of major foot-related diseases. Therefore, research is actively underway on shoes that can complement the foot's center of gravity and shock absorption functions. The following is an analysis of the general balance maintenance and shock absorption of the foot, as well as prior art for implementing balance maintenance and shock absorption. First, regarding maintaining balance, if we analyze the general walking motion of the foot, the outer edge of the heel first touches the ground, then the foot rolls forward, the toes meet on the ground, and finally, the heel lifts off the ground and the foot is pulled forward, causing movement. In other words, the foot rotates downward and causes pronation when it touches the medial side of the ground. This is a normal process. However, wearing the wrong shoes that do not take into account foot characteristics or the characteristics of the exercise can lead to excessive pronation during walking or exercise, and in some cases, supination. In other words, the foot becomes unable to maintain its center of gravity. This results in damage to the feet and, in particular, leads to damage to the lower limbs, knees, and lower back. As such, insoles are inserted to compensate for foot center of gravity deviation; however, this compensation has limitations because it relies on mass production based on averages, making it impossible to apply individual characteristics. The limitations of such reinforcement cause deformed growth in shoe wearers and lead to many side effects, such as the expansion of discomfort to other parts of the body. Meanwhile, due to partial damage to the medial arch of the foot or discomfort such as pain in other areas, measures are sometimes taken to enhance the completeness of correction by using custom-made insoles for rehabilitation or correction, or by inserting additional orthotics into existing shoes. However, such measures are taken when the abnormal symptoms in the foot have progressed significantly beyond the initial stage, and they are not preventive measures taken in advance. It is true that foot problems can be prevented to some extent by detecting signs early or correcting walking patterns if symptoms are not severe. However, if one continues to wear ill-fitting shoes that do not suit the foot's gait, basic prevention becomes difficult, leading to fundamental problems. In order to solve the above problems, Korean Published Patent Application No. 10-2002-0007412 proposes a shoe equipped with a bladder system (1) in the midsole of the shoe, as shown in FIGS. 1 and 2, which can maintain balance by preventing excessive pronation and supination during walking. The bladder system (1) comprises bladder chambers (4, 5, 6) interconnected by conduits (2, 3), and valves (7, 8) are provided in the conduits (2, 3), so that the valves (7, 8), which operate due to the load generated during walking, regulate the pressure within the bladder chambers (4, 5, 6) to suppress excessive pronation and supination. However, the bladder system (1) described above had a complex structure, requiring the essential provision of a chamber, conduit, and valve, which not only made