CN1259902A - Cushion double layer air cushion - Google Patents

Abstract

A buffer double-layer air cushion suitable for a shoe patch comprises an outer air cushion (1) and an inner air cushion (2). The outer air cushion (1) and the inner air cushion (2) are inflated with different internal pressures. The upper surfaces of the outer air cushion (1) and the inner air cushion (2) are bent downwards to form two surfaces without specific curvature. The cushion double cushion thus produces a good 3D curvature that fits closely to the foot when worn, and good cushioning and shock absorbing functions, by means of air or gas pressure.

Description

Cushion double layer air cushion

Background of the invention

For comfort and shock absorption when worn, a traditional shoe patch of ordinary elastic foam rubber or sponge inner layer is added to the underside of the leather outer layer. In fact, the inner layer of foam rubber is limited in elasticity and layer thickness, which makes the cushioning and shock absorption ability of traditional shoe patches not very ideal in actual use.

An inflatable air cushion for shoe patch has been disclosed by the same applicant of the present invention, but it is only a 2D structure and cannot produce ideal shock absorption function.

Summary of the invention

Considering the shortcomings of the traditional shoe patch air cushion, the present invention provides a cushioning double-layer air cushion suitable for shoe patch.

The main feature of the present invention is an outer air cushion and an inner air cushion arranged in the outer air cushion, each of which has a different internal pressure to form a soft outer layer for a comfortable feeling and a tight fit with the foot when worn. .

Brief description of the drawings

The invention can be better understood with reference to the accompanying drawings, in which:

Figure 1 is a side view of the cushioning double-layer air cushion for shoe patch of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the right view of Fig. 2;

Fig. 4 is a cross-sectional view along line 4-4 in Fig. 2;

Fig. 5 is a cross-sectional view along line 5-5 in Fig. 2;

Figure 6 is a side view of a second preferred embodiment of the cushioning double-layer air cushion for a shoe patch of the present invention;

Figure 7 is a top view of Figure 6;

Fig. 8 is the right side view of Fig. 6;

Fig. 9 is a cross-sectional view along line 9-9 in Fig. 7;

Fig. 10 is a cross-sectional view along line 10-10 in Fig. 7;

Fig. 11 is a cross-sectional view of the inflation step of the cushioning double-layer air cushion of the present invention;

Fig. 12 is a side view of the third preferred embodiment of the cushioning double-layer air cushion of the present invention;

Figure 13 is a top view of Figure 12;

Fig. 14 is the right side view of Fig. 12;

Fig. 15 is a cross-sectional view along line 15-15 in Fig. 13;

Fig. 16 is a cross-sectional view along line 16-16 in Fig. 13 .

Detailed description of the preferred embodiment

The cushioning double-layer air cushion of the present invention is suitable for shoe patch, so it has the function of closely fitting the foot, cushioning and shock absorption, which is different from the pad used for soles. It is fairly thin and has a curved upper surface similar to that of a foot. Furthermore, the area enclosed by the hollow perimeter is smaller than the surface area of the air cushion, allowing a raised 3D bow on at least one or both faces. Figures 1-5 show a first preferred embodiment of a cushioning double-layer air cushion, which comprises an outer air cushion 1 and at least one inner air cushion 2 disposed within the outer air cushion 1 .

There are many concave holes 11 or grooves 12 in the upper surface and/or slightly lower surface of the outer air cushion 1, but the concave holes or grooves 12 can be omitted (as shown in Figures 12-16). Furthermore, the outer air cushion 1 has at least one side opening for the insertion of the inner air cushion 2, which is sealed after the inner air cushion 2 is disposed therein.

The inner air cushion 2 disposed in the outer air cushion 1 has an inner pressure higher than that in the outer air cushion 1, and a plurality of concave holes 21 or grooves 22 formed on at least one surface or both surfaces. The depth of the concave hole 21 and the groove 22 is smaller than the depth of the concave hole 11 and the groove 12 of the outer air cushion 1 . The width of the concave hole 21 or the groove 22 is at least equal to the outer diameter or width of the concave hole 11 or the groove 12 of the outer air cushion 1 .

In addition, when the inner air cushion 2 is disposed in the outer air cushion, the inner air cushion 2 has a layer of glue or adhesive attached to the upper surface to stick to the contact portion of the inner surface of the outer air cushion 1, and then the open side of the outer air cushion 1 is covered. heat seal. Then this double layer air cushion has one thickness but two different internal pressures.

6-9 show the second best embodiment of the cushioning double-layer air cushion of the present invention, wherein the outer air cushion 1 and the inner air cushion 2 are combined, and the concave holes 11 or grooves 12 of the outer air cushion 1 are installed in the concave holes of the inner air cushion 2 21 or the groove 22, after the inner air cushion 2 is inflated with a higher pressure than the outer air cushion 1, the holes 12 and 21 or the grooves 12 and 22 of the air cushion 1 and the air cushion 2 are tightly combined with each other.

The internal pressure of the outer air cushion 1 is influenced by the hollow channel 10 fixed on the air cushion 1 . The outer air cushion 1 is inflated through the channel 10 after its periphery is sealed. The inner air cushion 2 also has a hollow passage 20 for filling gas inside to a predetermined pressure. In the actual process, the pre-inflated inner air cushion 2 is inserted into the outer air cushion 1, and then the outer air cushion 1 is sealed and inflated.

Another method of filling the outer air cushion 1 and the inner air cushion 2 with gases of different internal pressures is shown in FIG. 11 . The hollow channel 10 of the outer air cushion 1 and the hollow channel 20 of the inner air cushion 2 are made coaxial. First, the same pressure is charged in the outer air cushion 1 and the inner air cushion 2, and then, the channel 10 of the outer air cushion 1 is sealed. In this case, the internal pressure of the outer air cushion 1 and the inner air cushion 2 is the same, because the channel 20 is still open to allow the inner air cushion 2 to communicate with the outer air cushion 1 . Next, the outer air cushion 1 is compressed to force the gas inside to flow into the uncompressed inner air cushion 2 through the channel 20 , resulting in a higher pressure in the inner air cushion 2 than in the outer air cushion 1 . Subsequently, the channel 20 is sealed with the channel 10, completing the whole process.

The finished cushioning double-layer air cushion has a soft outer air cushion 1 which has a lower internal pressure than inner air cushion 2, which has a higher internal pressure and is harder than outer air cushion 1. First, when the outer air cushion 1 is sealed with an internal pressure of 20 pounds, the internal pressure of the inner air cushion 2 is also the same pressure value of 20 pounds, because the two air cushions 1 and 2 communicate with each other. Then if the outer air cushion 1 is compressed, forcing its inner surface into contact with the upper surface of the inner air cushion 2, 10 pounds of pressure from the outer air cushion 1 can enter the inner air cushion 2, so the pressure on the outer air cushion 1 becomes 10 pounds, and the inner air cushion The pressure of 2 becomes 30 lbs. The channels 20 of the latter are then sealed to maintain the different pressures in the cushions 1 and 2 .

However, when the cushioning double-layer air cushion is compressed, the inner air cushion 2 only holds 20 pounds of pressure, because the outer air cushion 1 has 10 pounds of pressure, and the original 30 pounds of pressure of the inner air cushion is subtracted by 10 pounds. Therefore, the load of the entire structure does not increase, but for the effect of cushioning and shock absorption, the outer layer of the double-layer air cushion is soft and comfortable, and the inner layer is slightly harder than the outer layer for different cushioning effects.

Therefore, the cushioning double-layer air cushion has a unique structure with different internal pressures but a single height, which has not been found in traditional air cushions. In addition, the interior of the inner and outer air cushions 1 and 2 can be filled with air, gas with low permeability and large particles such as SF6, C2F6, etc., fluid, semi-fluid or liquid.

Having thus described the preferred embodiment of the invention, it will be appreciated and understood that various modifications may be made and the appended claims are intended to cover all such modifications which would fall within the spirit and scope of the invention.

Claims (8)

1. A cushioning double-layer air cushion comprising an outer air cushion, an inner air cushion disposed within the outer air cushion, said outer air cushion having a plurality of concave holes or grooves arranged on at least one or two surfaces. There are many concave holes or grooves on at least one or two surfaces of the inner air cushion, and an adhesive layer on the upper surface of the inner air cushion adheres to the inner surface of the outer air cushion. 2. A cushioning double-layer air cushion includes an outer air cushion, an inner air cushion arranged in the outer air cushion, the outer air cushion has many concave holes or grooves on at least one surface or two surfaces, and the inner air cushion has at least There are many recesses or grooves on one or both surfaces, at least one of the recesses or grooves of the outer air cushion fits in one of the recesses or grooves of the inner air cushion, and the outer air cushion After being filled with different pressures from the inner air cushion, the paired mating parts of the concave holes or grooves of the outer air cushion and the inner air cushion are closely matched. 3. A cushioning double-layer air cushion includes an outer air cushion, at least one inner air cushion disposed on the outer air cushion, the outer air cushion has a hollow passage communicated with the outside air, and the inner air cushion has a hollow channel communicated with the outer air cushion. channel, the outer air cushion and the inner air cushion are filled with a predetermined pressure, after which the channel of the outer air cushion is sealed, the outer air cushion is compressed to a predetermined depth, and then the channel of the inner air cushion is connected to the inner air cushion The channels of the outer air cushions are sealed. 4. The cushioning double-layer air cushion according to claim 1, 2 or 3, characterized in that before the inner air cushion is configured in the outer air cushion, the outer air cushion has at least one hole for inserting the inner air cushion Side opening. 5. The cushioning double-layer air cushion according to claim 1, 2 or 3, characterized in that the hollow channels of the outer air cushion and the inner air cushion are coaxial. 6. The cushioning double-layer air cushion according to claim 1, 2 or 3, characterized in that said outer air cushion has an internal pressure different from that of said inner air cushion. 7. The cushioning double-layer air cushion as claimed in claim 1, 2 or 3, characterized in that the cushioning double-layer air cushion is suitable for shoe patches, foot patches, and sports protection pads. 8. The cushioning double-layer air cushion according to claim 1, 2 or 3, characterized in that the cushioning double-layer air cushion has a hollow inner region with a smaller area than the upper surface, which allows at least the upper surface and/or the lower surface Bending up creates an arcuate 3D structure.

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