TWM613358U - Four-density composite insole - Google Patents

Abstract

A four-density composite insole, comprising a first density insole body, a second density forefoot pad, a third density arch pad, and a fourth density heel pad, wherein the first density insole body is a highly elastic EVA with a hardness of 35C-40C Cushion pad, the bottom of the insole body is preset with forefoot pad grooves, arch pad grooves and heel pad grooves; the second density forefoot pad is an open-cell foam and breathable PU with a hardness of 39C-45C; the third The density arch pad is 74D nylon; the fourth density heel pad is an open-cell foam and breathable PU with a hardness of 32C-38C; the composite insole composed of four densities provides the best support and cushioning effect for the feet .

Description

Four-density composite insole

This creation is about insoles, especially a four-density composite insole.

Gait biodynamics points out the results of three consecutive cycles of walking in the landing phase, stable phase, and propulsion phase. In short, the walking system first touches the ground with the heel, and the weight moves from the outside of the foot to the toe, and then from Kicked toes forward. And for every step you take, 0.7 to 1.5 times your body weight will fall on the soles of your feet, and the reaction force will rush back to the ankle and knee joints.

Foot biomechanics studies have found that designing an insole with medial, lateral, and lateral curvature based on the arrangement and curvature of the foot bones will be different from ordinary insoles that only provide support, but completely curvature of the foot Wrap, the dynamic conditions during travel will guide the walking foot pressure center (COP; Center of Pressure) trajectory to achieve the purpose of labor saving and comfort.

The movement dynamics of the foot include the repeated operation of the landing period, the stable period and the advancing period. Among them, shock-absorbing materials must be implanted in the heel during the landing phase to disperse and absorb the reaction force generated by the body landing, and the cup-shaped design increases the stability during landing and concentrates the heel fat to form a self-absorbing function ; In the stable period, the three-dimensional design conforms to the natural arrangement curve of the foot bones, so that the foot is in close contact with the insole, and the pressure is evenly distributed; in the propulsion period, the rebound material is used for the relative to the first and second toe bones. The pressure curve of the human foot shows that when most people advance, they usually use the first and second toes as the propulsion force point. Using rebound material on this part will achieve a labor-saving propulsion effect.

The applicant previously disclosed a three-density support cushioning insole with the new patent No. M597583, which is composed of a first-density BPU insole body, a second-density EVA support structure, and a third-density BPU midfoot support pad. The supporting and slow pressure effect of the three areas of the heel and the starting position of walking.

This creation is based on the above-mentioned creation concept, and provides a four-density composite insole with an attitude of excellence. The main purpose is to improve the comfort of the insole with comprehensive support.

In order to achieve the above purpose, this creation consists of a first density insole body, a second density forefoot pad, a third density arch pad and a fourth density heel pad to form a four-density composite insole.

In the preferred embodiment of this creation, the first density insole system is a high-elasticity EVA cushion with a hardness of 35C-40C, and the bottom is provided with forefoot cushion grooves, arch cushion grooves and water drop-shaped heel cushion grooves. Slots to accommodate forefoot pads, arch pads and heel pads respectively;

In the preferred embodiment of this creation, the second density forefoot pad is an open-cell foamed and breathable PU with a hardness of 39C-45C;

In the preferred embodiment of this creation, the third-density 3D arch pad is nylon with a hardness of 74D;

In the preferred embodiment of this creation, the fourth density heel pad is an open-cell foamed and breathable PU with a hardness of 32C-38C.

1: Insole body

11: Forefoot cushion groove

12: Arch pad groove

13: Heel pad groove

2: Forefoot pad

21: Vent holes

3: Arch pad

4: heel pad

Figure 1 is a three-dimensional view of this creation;

Figure 2 is an exploded view of this creation.

Please refer to Figure 1-2. This creation consists of a first-density insole body 1, a second-density forefoot pad 2, a third-density arch pad 3, and a fourth-density heel pad 4 to form a four-density composite insole, of which:

The first-density insole body 1 is a high-elastic EVA cushion with a hardness of 35C-40C, which provides full pressure reduction and rebound of the entire foot. The bottom is provided with a forefoot cushion groove 11, an arch cushion groove 12 and water droplets. -Shaped heel pad groove 13 for accommodating the forefoot pad 2, the arch pad 3 and the heel pad 4 respectively;

The second-density forefoot cushion 2 is an open-cell foam and breathable PU with a hardness of 39C-45C, which has the effect of increasing the pushing action during the landing period after gait, so as to achieve a smooth and labor-saving propulsion effect. The multiple ventilation holes 21 are more helpful for the exhaust of hot air during exercise to ensure that the soles of the feet are dry;

The third-density 3D arch pad is nylon with 3 hardness and 74D, which provides good arch support. When the center of gravity is lowered during exercise, it can provide good cushioning effect in real time. With the material characteristics and 3D three-dimensional shape, it can rebound quickly. , Protect the arch of the foot and increase the efficiency of walking gait; and

The fourth-density heel pad 4 is an open-cell foam and breathable PU with a hardness of 32C-38C, which can cushion the force when touching the ground. When the BPU heel pad 4 is combined with the EVA heel pad groove 13, it provides the heel The effect of cushioning under shock absorption. In addition, because the PU material has better compression resistance than EVA, the heel pad is not easy to collapse, and the durability is also significantly improved.

By combining the above-mentioned composite insoles composed of four different materials and densities, it provides the best support and cushioning effect for each area of the foot, so that the comfort and support performance of the insole can reach the expected effect.

The technical content and technical features of this creation have been disclosed as above, but familiar with this technique The skilled person may still make various substitutions and modifications based on the disclosure of this creation without departing from the creative spirit of this case. Therefore, the scope of protection of this creation should not be limited to those disclosed in the embodiments, but should include various replacements and modifications that do not deviate from this creation, and are covered by the following patent application scope.

1: Insole body

11: Forefoot cushion groove

12: Arch pad groove

13: Heel pad groove

2: Forefoot pad

21: Vent holes

3: Arch pad

4: heel pad

Claims (1)

A four-density composite insole, comprising a first density insole body, a second density forefoot pad, a third density arch pad, and a fourth density heel pad, wherein the first density insole body is a highly elastic EVA with a hardness of 35C-40C Cushion pad, the bottom of the insole body is preset with forefoot pad grooves, arch pad grooves and heel pad grooves; the second density forefoot pad is an open-cell foam and breathable PU with a hardness of 39C-45C; the third The density arch pad is 74D nylon; the fourth density heel pad is an open-cell foam and breathable PU with a hardness of 32C-38C; combined with four different density composite insoles, it provides the best support and cushioning for the feet effect.

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