JPS628723Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention A. Industrial Field of Application The present application relates to an air-infused shoe sole having a novel configuration.

B. Conventional techniques and their problems Conventionally, the soles of commonly used athletic shoes are limited by the elasticity of the material itself, making it impossible to apply them to various types of exercise. Furthermore, it is not possible to adjust the cushioning force of the sole according to the height and weight of each user. However, during exercise, the cushioning elasticity of the sole directly affects the bearing force and impact force of each joint of the person exercising, and when performing intense jumping movements, the upward force that occurs at the moment the foot touches the ground Since the impact force is the sum of gravity and velocity, the amount of force is almost the same as the maximum load that the foot can withstand. Therefore, if the cushioning elasticity of the shoe sole is not ideal, as the number of exercises increases, it may cause injury to the body of the person exercising, and even cause injury to the brain. Some of the soles currently on the market have air-infused or liquid-injected cushions, which are placed on the sole of the shoe to increase the elasticity of the sole and to improve the elasticity of the sole itself. The aim is to reduce injuries caused by insufficient elasticity. However, since this type of cushion has a constant density of the gas or liquid injected into it, it is difficult to make appropriate adjustments at will according to the height, weight and different elasticity requirements of different users. It is possible. Therefore, there are difficulties in its effectiveness and sensitivity.

B. Structure of the invention A. Means for solving the problem In this application, we decided to solve the above problem by taking the following points into consideration.

1. Obtaining optimal cushioning elasticity. By using a full or half-sided sole using the air-blown cushion structure of the present invention, the weight of the shoe body can be reduced, and the pressure of the filled air can be adjusted according to the user's needs.

2. Make sure that the soles of your shoes do not dent even if a nail or the like gets stuck in the sole of your shoes and the air in the air chamber leaks out. In the sole of the present invention, the through holes are pre-drilled in several places on the cushion. When the foam coating layer is formed by PU injection, the through holes are filled and become vertical supports. Even when water leaks out, the soles of these shoes do not dent downwards.

Third: Preventing ankle sprains. If the proposed air chamber cushion is made into a double air chamber, the difference in the amount of air filled between them will make it possible to adapt to the moment when the foot hits the ground during exercise by making the buffer pressure at the point of fall greater than the impact force. in,
Therefore, it evenly supports the foot's landing on the ground, and prevents the ankle of the foot from being sprained in the event of an instantaneous impact because there is no slope that would occur due to a sudden loss of air pressure in the air chamber cushion.

4. Can be broadly applied to different exercise habits. When the proposed air chamber cushion is made into a double air chamber, the pressure of the double air chamber can be freely adjusted to different buffer pressures depending on the part of each individual's foot that touches the ground (inside or outside of the heel). Because it can be done, its applicability can be widened.

B. Embodiment The sole of the present invention is composed of a cushion 1 in which air is blown and a covering layer 2 made of PU (or IIR) material surrounding the cushion 1. Air chamber cushions (hereinafter simply referred to as cushions) 1 can be made into a full-surface type that covers the entire sole of the shoe, or a half-surface type that covers only half of the sole, and can also be made into a mono (single) air chamber or a double (double) air chamber. can also be made.

Figures 1, 2, and 3 show shoe soles made with a half-sided mono-cushion structure. First of all, an elastic and extensible material (such as PU or IIR)
A hollow, sealed bag (which will become the cushion 1 after completion) is made by vacuum absorption molding, and the upper and lower membranes of the bag are joined and fixed at several joint points 11. The function of these joint points is to prevent the joint points 11 from expanding when the cushion 1 is inflated by blowing air after the sole is manufactured. In addition, a through hole 12 is made at the joining point 11, and when PU is injected to attach the foam coating layer 2 to the upper and lower layers of the cushion 1 for processing, the PU material is passed through this hole. The upper and lower layers of the cushion 1 are connected to each other, and the PU material filled in the through hole 12 is used to connect the upper and lower layers of the cushion 1 to each other.
1 will be formed. Together with the cushion 1, this filling column 21 has an elastic function that doubles as a shock absorber, and even if a sharp object gets stuck in the cushion 1 of the sole of the shoe and air leaks out, the filling column 21 can vertically fill the space. can be supported. Therefore, a certain level of cushioning elasticity is maintained continuously, and the sole of the shoe is prevented from denting downward after air leaks. One air valve 4 (commonly known as a "belly button") is installed on each side of the left and right sides of the shoe sole, and the air valve 4 is connected to the cushion 1. A syringe needle used to inflate a basketball or the like is inserted into the air valve 4 and into the cushion 1. Blow air. . By appropriately adjusting the amount of air blown into the body, it is possible to obtain the cushioning elasticity required for each individual's exercise situation. In addition to air, it is also possible to inject other gases or liquids, such as injecting liquid (or gas) from one air valve and releasing the previously introduced gas (or liquid) from another air valve.

Figures 4, 5, and 6 show the cushion of the present invention, which has a half-sole structure (half) and has a double air chamber structure. This double cushion is made by installing a single curved dividing layer 3 along the outside of the rear half of the sole in the mono cushion 1 mentioned above, dividing the air chamber into two, and creating another air chamber 5. Make it compose. This becomes a double air chamber cushion. The purpose of creating a double air chamber is to provide two cushions 1 and 5, which form a cushion, each with an air valve 4, and fill with different amounts of air to provide two different types of cushioning elasticity. be. The effect is that each person's exercise habits are different, and depending on whether the inside of the foot hits the ground first or the outside of the foot hits the ground first, the two types of cushioning elasticity of the sole can be adjusted differently. It can be adjusted according to a person's characteristics. When exercising, if the foot does not fall evenly to the ground, it is easy to sprain the ankle. Therefore, some people are currently researching the problem of the twisting of the foot landing on the ground that tends to cause ankle injuries later on, and have come up with the principle of the so-called double-density sole to prevent ankle injuries caused by uneven ground landing of the foot during exercise. is designed to eliminate the drawbacks of injury. This double-density shoe sole is made by combining two types of materials with different densities, so the elasticity of the material is constant and the density cannot be adjusted. Therefore, many people do not have the same habit of dropping their feet to the ground, so it is difficult to apply it widely. The purpose of designing this double air chamber is to provide a product that can be adjusted and used by anyone according to the different habits of the public to meet the needs of each person. If a higher density gas than the cushion 1 is injected into the outer air chamber 5, this air chamber 5 will be harder than the inner cushion 1, so when the foot hits the ground, the person whose foot leans to the outside As soon as the foot touches the ground, there is enough support to cushion the atmospheric pressure, preventing uneven distribution of gas and helping the foot settle on the ground, preventing the ankle from spraining. In addition, if a person's foot leans inward when it hits the ground, by injecting a large amount of gas into the cushion 1 inside the double air chamber and making its density greater than the outer air chamber 5, the ground will be flat. You can calm down.

C. Effects of the invention A: The cushioning elasticity can be easily adjusted and changed according to the needs of each user.

(b) It is possible to create several independent air chambers.

C. The weight of the shoe can be adjusted by injecting different fluids.

D. Even if a sharp object such as a nail is inserted into the sole of the shoe and air leaks out, the sole will not dent downward.

The efficacy and function of the proposed shoe sole during actual use are not found in those currently sold in the general market, and its practicality is higher than that of general elastic designed shoe soles, making it far more valuable and useful.

[Brief explanation of the drawing]

Figure 1 is a plan view of the sole of a mono air chamber cushion, Figure 2 is a sectional view taken along line A-A, Figure 3 is a sectional view taken along line B-B, and Figure 4 is a sole of a double air chamber cushion. 5 is a sectional view taken along the line CC, and FIG. 6 is a sectional view taken along the line D-D. 1... Air chamber cushion, 11... Junction point, 1
2...Through hole, 2...Foam covering layer, 21...Filling strut, 3...Dividing layer, 4...Air valve, 5...
air chamber.

Claims (1)

[Scope of utility model registration request] An air chamber cushion made of an elastic and extensible material is provided between the upper and lower covering layers forming the sole, and one air valve is attached to each side of the air chamber cushion. In addition to making a certain number of hermetic joint points and joining the upper and lower membranes of the air chamber cushion at these joint points, upper and lower through holes are made at the joint points so that when processing the area around the air chamber cushion, the upper and lower membranes are connected. A shoe sole characterized in that the upper and lower covering layers of the air chamber cushion are interconnected by passing the material of the layers through the through holes, and the through holes are filled to form vertical struts.