KR-102963568-B1 - TENSION-ADJUSTABLE SHOE SOLE

Abstract

The present invention comprises: an outsole; a midsole coupled to the upper part of the outsole and having a storage space formed by a recess on its upper surface; and a spring pocket inserted into the storage space and having a spring built inside; wherein the storage space is composed of a front storage groove formed in the forefoot area of the foot and a heel storage groove formed in the rearfoot area of the foot, and the spring pocket is composed of a front spring pocket inserted into the front storage groove and a heel spring pocket inserted into the heel storage groove, and by adjusting the tension of the front spring pocket and the heel spring pocket differently, when a load is applied to the rearfoot, the heel spring pocket absorbs the shock, and when a load is applied to the forefoot, the front spring pocket generates a rebound force against the ground to have rebound elasticity.

Inventors

• 박선우
• 부진후

Dates

Publication Date

20260512

Application Date

20241126

Claims (3)

1. Outsole; A midsole coupled to the upper part of the above outsole and having a storage space formed in a recess on its upper surface; and A spring pocket inserted into the above storage space and having a spring built inside; comprising, The above storage space is composed of a front storage groove formed in the forefoot area of the foot and a heel storage groove formed in the heel area of the foot, and The above spring pocket is composed of a front spring pocket inserted into the above front storage groove and a heel spring pocket inserted into the above heel storage groove, and By adjusting the tension of the front spring pocket and the heel spring pocket differently, It is characterized in that when a load is applied to the rear heel, the heel spring pocket absorbs the shock, and when a load is applied to the front heel, the front spring pocket generates a rebound force against the ground to have rebound elasticity. Inside the spring pocket, a plurality of unit cells are independently partitioned and formed, and Inside the above unit cell, the above spring and a pair of support plates disposed at the top and bottom of the spring are accommodated, A tension-adjustable shoe sole characterized in that when the spring is compressed and restored inside the unit cell, the unit cell operates independently without interference with other adjacent unit cells.
2. In Article 1, The tension of the above spring pocket is, The length, diameter, and elastic modulus of the above spring are controlled to be adjusted, The above front spring pocket includes a spring having a higher modulus of elasticity than the spring of the above heel spring pocket, and A tension-adjustable shoe sole characterized in that the heel spring pocket contains a spring having a relatively larger diameter and longer length than the spring of the front spring pocket.
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Description

Tension-adjustable shoe sole The present invention relates to a shoe sole that provides shock absorption and rebound elasticity functions by adjusting tension according to different parts of the sole. Shoes protect the wearer's feet during daily life and exercise activities, and provide comfort and stability. The shoe sole is positioned between the wearer's foot and the ground, playing a key role in absorbing shock and transmitting rebound force. These soles have a significant impact on the wearer's comfort, reduction of fatigue, and improvement of athletic performance. Shoe soles are generally made of materials such as rubber or polyurethane and are often designed as a single structure. While sole structures function to some extent in terms of shock absorption and providing rebound, they have limitations in satisfying the specific characteristics associated with the different load distributions of the forefoot and heel. For example, the heel must absorb significant impact upon landing, while the forefoot must provide propulsion; however, conventional soles fail to effectively meet these differing requirements for each area. Recently, various attempts have been made to improve shock absorption and rebound by inserting airbags, gel pads, or elastic materials into the soles. While these technologies provide additional shock absorption and rebound, they have the drawback of not being able to finely adjust the pressure for specific areas. For example, a sole using an airbag only provides uniform pressure overall and fails to respond appropriately to impacts occurring on specific parts of the foot. The load distribution and movement patterns of the foot vary by region, such as the forefoot, arch, and heel. If excessive load is concentrated on a specific part of the foot, the wearer may experience fatigue or face an increased risk of injury. Furthermore, elastic materials used to enhance rebound often possess a single stiffness, making it difficult to adjust them to suit the wearer's physical condition or type of movement. Therefore, in order to solve the aforementioned problems, there is a need for technology that can overcome the limitations of existing sole structures by maximizing shock absorption at the heel and providing rebound elasticity at the forefoot to improve the wearer's comfort and reduce fatigue. Figure 1 is an exploded view showing the state in which a spring pocket is housed in the midsole. Figure 2 is a combined diagram showing the state in which a spring pocket is housed in the midsole. Figure 3 is a plan view showing a storage space formed by being sunken into the upper surface of the midsole. Figure 4 is a plan view showing a spring pocket stored in a storage space formed by a depression on the upper surface of the midsole. Figure 5 is a plan view showing a storage space formed by sinking into the arch area of the midsole, with a spring pocket stored therein. Figure 6 is a plan view of a spring pocket. Fig. 7 is a front perspective view of a spring pocket. Fig. 8 is a side perspective view of a spring pocket. Fig. 9 is a front view of the spring pocket. FIG. 10 is a front view of a spring pocket with a built-in support plate. The present invention is susceptible to various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each drawing. The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this invention, terms such as "comprising" or "having" are intended to specify the presence of the features, numbers, steps, reactions, components, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, reactions, components, or combinations thereof. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application. The present invention relates to a shoe sole capable of tension adjustment. In this regard, FIG. 1 is an exploded view showing a state in which a spring pocket is housed in a midsole, and FIG. 2 is