Blow-molded full-piece gas-filled air cushion

Abstract

We provide a blow-molded, full-piece, gas-filled air cushion that reliably absorbs forces received at all points on the foot, not just the forefoot, and provides comprehensive protection for the wearer's foot. [Solution] The blow-molded full-piece gas-injected air cushion is coupled to the outsole 100 and comprises a forefoot cushion section 1, a heel adjustment section 2, a side contact section 3, and an elastic suction unit 4. A front air chamber is formed inside the forefoot cushion section. The heel adjustment section has a rear air chamber inside and a storage tank 22 recessed inward on its top surface. The side contact section has both ends connected to the forefoot cushion section and the heel adjustment section, respectively, and forms a side air chamber inside. The forefoot cushion section, heel adjustment section, and side contact section form an integrated structure by blow molding. The front air chamber, rear air chamber, and side air chamber are in communication with each other. The elastic suction unit is disposed in the storage tank.

Description

Technical Field

[0001] The present invention relates to a full-piece gas injection air cushion for blow molding, and particularly to a full-piece gas injection air cushion for blow molding applied in the field of shoes.

Background Art

[0002] The function of the air cushion structure is only a simple buffering function. However, some air cushions can suck and discharge the gas inside the shoe or suck the external gas to improve the comfort of the foot inside the shoe, and each air cushion has different functions. Hereinafter, the use of the air cushion will be described. For example, Patent Documents 1 and 2 directly buried the air cushion in the accommodation tank of the outsole, and utilized the action of stepping on the ground by the foot at any time to fill the air cushion with gas, obtaining an optimal elastic and buffering effect.

[0003] However, the part having the above-mentioned air cushion was installed only at the location corresponding to the forefoot of the foot. Therefore, even when force was applied to the entire foot of both feet, only the location where the forefoot was located could obtain appropriate buffering. In modern times when it is required to completely protect the foot, there are still many defects and it is not sufficient. For example, in the technology of Patent Document 2, the position of the air cushion was concentrated at the location of the forefoot, and the air cushion was designed in a sealed manner. Therefore, the filled gas was only stored in the support airbag layer without flowing, and each airbag of the support airbag layer was formed for each block. The airbag of each block, the support degree of the forefoot was determined by the pressure of the gas filled inside. Therefore, when the internal gas decreased, the support degree of the airbag was gradually lost, and the anti-vibration function was also lost. The user could not know whether the gas inside the airbag was sufficiently filled. If it was not sufficient, there was a risk that the foot would be injured.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] The main objective of the present invention is to provide a blow-molded, full-piece, gas-filled air cushion that reliably cushions forces received at all points on the foot, not just the forefoot, and provides comprehensive protection for the foot of the person wearing the shoe. This improves upon the shortcomings of conventional technology, where only the forefoot, which receives the most force, receives cushioning. [Means for solving the problem]

[0006] To solve the above problems, according to a first embodiment of the present invention, a blow-molded full-piece gas-injected air cushion is provided, which is coupled to an outsole and comprises a forefoot cushion portion, a heel adjustment portion, a side contact portion, and an elastic suction unit, wherein the forefoot cushion portion has a front air chamber formed inside, the heel adjustment portion has a rear air chamber formed inside and a storage tank formed inwardly recessed on its top surface, and the side contact portion has both ends connected to the forefoot cushion portion and the heel adjustment portion, respectively, and has a side air chamber formed inside, and the forefoot cushion portion, the heel adjustment portion and the side contact portion are formed as an integrated structure by blow molding, and the front air The invention provides a blow-molded, full-piece, gas-filled air cushion characterized in that the chamber, the rear air chamber, and the side air chamber are in communication with each other, the elastic suction unit is disposed in the containment tank and includes an elastic sac, an intake conduit group, and an exhaust conduit group, one end of the intake conduit group and the exhaust conduit group is connected to the elastic sac, the other end of the exhaust conduit group is connected to the forefoot cushion and is in communication with the front air chamber, and when the elastic sac is subjected to pressure and deformed, the gas inside the elastic sac is filled into the front air chamber from the exhaust conduit group, filling the front air chamber, the rear air chamber, and the side air chamber, and supporting the forefoot, hindfoot, and lateral longitudinal arch of the foot. [Effects of the Invention]

[0007] The blow-molded, full-piece, gas-injected air cushion according to the present invention is not limited to the forefoot area, but reliably cushions forces received at all points on the foot, providing comprehensive protection for the foot of the person wearing the shoe. This improves upon the shortcomings of conventional technology, where only the forefoot, which receives the most force, receives cushioning. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing the present invention combined with an outsole and an elastic suction unit. [Figure 2] Figure 1 is an exploded perspective view. [Figure 3] This is a perspective view showing the complete shoe body formed by applying Figure 1. [Figure 4] This is a cross-sectional view of Figure 1. [Figure 5] Figure 4 is an explanatory diagram showing the state in which gas flows after the elastic sac is subjected to pressure. [Figure 6] Figure 5 is a plan view. [Figure 7] Figure 5 is an explanatory diagram illustrating the state in which an elastic sac repels pressure and a gas flows. [Figure 8] This is a plan view of Figure 7. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described with reference to the attached drawings. In each drawing, components denoted by the same reference numerals have the same or similar configurations.

[0010] Refer to Figures 1 to 8. As shown in Figures 1 to 8, a blow-molded full-piece gas-injected air cushion according to one embodiment of the present invention is coupled to an outsole 100 and comprises a forefoot cushion portion 1, a heel adjustment portion 2, a side contact portion 3, and an elastic suction unit 4. A front air chamber 11 is formed inside the forefoot cushion portion 1. The heel adjustment portion 2 has a rear air chamber 21 inside and a storage tank 22 formed inwardly recessed on its top surface. The side contact portion 3 has both ends connected to the forefoot cushion portion 1 and the heel adjustment portion 2, respectively, and has a side air chamber 31 inside. The forefoot cushion portion 1, the heel adjustment portion 2, and the side contact portion 3 form an integral structure by blow molding. The front air chamber 11, the rear air chamber 21, and the side air chamber 31 are in communication with each other. The elastic suction unit 4 is disposed in the storage tank 22 and includes an elastic sac 41, an intake pipe group 42, and an exhaust pipe group 43. One end of the intake conduit group 42 and the exhaust conduit group 43 are connected to the elastic sac 41. The other end of the exhaust conduit group 43 is connected to the forefoot cushion 1 and communicates with the anterior chamber 11. When the elastic sac 41 is subjected to pressure and deforms, the gas inside the elastic sac 41 is filled into the anterior chamber 11 from the exhaust conduit group 43, filling the anterior chamber 11, the posterior chamber 21, and the lateral chamber 31, and supporting the forefoot, hindfoot, and lateral arch of the foot.

[0011] In one embodiment of the present invention, the forefoot cushion portion 1, heel adjustment portion 2, and side contact portion 3 are integrally molded using a blow molding method, and the entire foot, including the forefoot, heel, and lateral longitudinal arch (also referred to as the arch of the foot located in the region between the forefoot and heel), can be fully protected when the user steps on the ground. Therefore, when an external force is applied to the foot, the force can be cushioned at the corresponding part. The arrows in Figures 6 and 8 indicate the flow direction of the gas filling. Compared to the conventional technology, which had the problem of cushioning only in the thicker forefoot portion and causing injury to other parts due to external forces, the present invention can reliably protect the foot from external forces. By manufacturing a complete sole (forefoot cushion portion 1, heel adjustment portion 2, and side contact portion 3) using a blow molding method, the present invention saves manufacturing time, can be directly bonded to the outsole 100, and can increase the consistency of the finished product and improve yield. Therefore, it can improve the problems of the conventional technology, which had drawbacks such as having to form a recess corresponding to the outsole 100 or having to manufacture two different types of air cushion parts.

[0012] The main technical features of the present invention have been described above, and the detailed technical features and structure of the present invention will be described below. First, as shown in Figures 1 and 4, in addition to obtaining a cushioning effect by the gas filling method, a plurality of reinforcing chambers 12 corresponding to each other are formed in recesses within the front air chamber 11 on the top and bottom surfaces of the forefoot cushion part 1. Reinforcing ribs 121 are formed between each corresponding reinforcing chamber 12, and step portions 122 are provided around the inner chamber wall surface of each reinforcing chamber 12, dividing the space within each reinforcing chamber 12, with the space near each reinforcing rib 121 being smaller than the space near the opening of each reinforcing chamber 12. Each reinforcing chamber 12 mainly provides auxiliary support for the weight of the foot, and the step portion 122 of each reinforcing chamber 12 forms the first support point, and then the reinforcing rib 121 forms the second support point that distributes the support, thereby dispersing the force with which the foot steps on the forefoot cushion part 1, and allowing the forefoot cushion part 1 to protect the forefoot more reliably.

[0013] To ensure reliable application to a complete shoe body, the present invention provides an upwardly extending extended piece 5 around the forefoot cushion portion 1, the top edge of the heel adjustment portion 2, and one side top edge of the side contact portion 3. The extended piece 5 is joined to the shoe surface 200. As shown in Figure 3, during manufacturing, simply covering the shoe surface 200 with the extended piece 5 surrounds it along the position of the extended piece 5, and then joining them using a subsequent processing method (e.g., bonding, heat bonding, melting, sewing, etc., but the processing method is not limited to these) to complete a complete shoe body.

[0014] Next, the storage tank 22 located in the heel adjustment section 2 will be described. The storage tank 22 of the present invention is mainly used to house the elastic suction unit 4, and is divided into a first tank section 221 and a second tank section 222 so that it can be easily replaced at a later date. The first tank section 221 communicates with the second tank section 222. The first tank section 221 is formed with a recess according to the shape of the elastic sac 41. The elastic sac 41 is attached to the first tank section 221. The intake pipe group 42 and the exhaust pipe group 43 are attached to the second tank section 222, respectively. The second tank section 222 is divided into a long tank section 2221 and a side tank section 2222. The intake pipe group 42 is located in the side tank section 2222. The exhaust pipe group 43 is located in the long tank section 2221 and is connected to the adjustment member 6. The adjustment member 6 is located in the side tank section 2222, and a portion of it is exposed through an adjustment port 23 formed on one side of the side tank section 2222. Designed to correspond to the long tank section 2221 and the side tank section 2222, the adjustment member 6 includes a cylindrical valve section 61, an adjustment section 62, and a gas relief section 63. One end of the valve section 61 is connected to the exhaust pipe group 43, and the other end is detachably attached to the adjustment section 62. A portion of the adjustment section 62 is exposed through the adjustment port 23 to facilitate user operation of the adjustment section 62. The gas relief section 63 is provided on one side of the valve section 61. The adjustment unit 62 rotates relative to the valve unit 61 to limit the air pressure in the front chamber 11, rear chamber 21, and side chamber 31, and when the air pressure inside the front chamber 11, rear chamber 21, and side chamber 31 is full and can no longer be filled, it releases gas from the gas release unit 63 (see Figures 1 and 2).

[0015] Finally, the intake passage group 42 and the exhaust passage group 43 will be described. As shown in Figures 2, 3, 6, and 8, the intake passage group 42 includes a unidirectional intake valve 421 and an intake pipe 422. The unidirectional intake valve 421 has one end connected to the elastic sac 41 and the other end connected to the intake pipe 422. The intake pipe 422 draws in and fills the gas inside the shoe. The exhaust passage group 43 includes two exhaust unidirectional valves 431, a multi-way valve 432, and multiple exhaust pipes 433. The aforementioned arrangement combination is one exhaust unidirectional valve 431, one exhaust pipe 433, the multi-way valve 432, the other exhaust pipe 433, and the other exhaust unidirectional valve 431. The last exhaust unidirectional valve 431 mentioned above communicates with the front air chamber 11. Furthermore, the multi-way valve 432 is a three-way valve, with both ends connected to the exhaust pipe 433, and a third end connected via the exhaust pipe 433 and also connected to the valve portion 61 of the adjustment member 6. In order to smoothly control the air pressure of the adjustment member 6, when filling with gas, the present invention first uses the adjustment member 6 to adjust and optimize the pressure applied to the foot of the person wearing the shoe. The forefoot and heel alternately step on the ground, and when the elastic sac 41 is stepped on and pressed by the heel, the air inside the elastic sac 41 is sent into the front air chamber 11 via the exhaust pipe group 43. After the force pressing the elastic sac 41 by the heel is released, the elastic sac 41 returns to its original position due to its elastic recovery force. The intake duct group 42 draws in and replenishes the gas inside the shoe, and the next time the heel part steps on the ground, the gas in the elastic sac 41 is sent into the front air chamber 11, and the gas in the front air chamber 11 simultaneously fills the side air chambers 31 and the rear air chamber 21, and when the gas in the front air chamber 11, the rear air chamber 21 and the side air chamber 31 is filled, the gas filling of the present invention is completed. When it becomes impossible to fill the front air chamber 11, the side air chambers 31 and the rear air chamber 21 with air, if the person wearing the shoe continues to step on the ground, gas will no longer enter the front air chamber 11, so the gas is guided through the multi-directional valve 432 and discharged to the valve part of the adjustment member 6, and exhausted using the gas release part 63 of the valve part 61, thereby filling and equating the air pressure in the front air chamber 11, the side air chambers 31 and the rear air chamber 21 (see Figures 5 to 8).

[0016] Finally, as described here, in order to securely attach the adjustment member 6 and prevent any adverse effects on the buffering of the force received by the lateral longitudinal arch of the foot, the maximum width of the side contact portion 3 (defined as T) is smaller than the distance from one side wall surface of the long groove portion 2221 to the adjustment port 23 (defined as E). Therefore, the adjustment member 6 can be disposed, and the position of the lateral longitudinal arch of the foot can be effectively buffered and protected.

Description of Signs

[0017] 1 Forefoot cushion part 2 Heel adjustment part 3 Side contact part 4 Elastic suction unit 5 Extension piece 6 Adjustment member 11 Front air chamber 12 Reinforcement groove 21 Rear air chamber 22 Accommodation groove 23 Adjustment port 31 Side air chamber 41 Elastic bladder 42 Intake duct group 43 Exhaust duct group 61 Valve part 62 Adjustment part 63 Gas escape part 100 Outsole 121 Reinforcement rib 122 Step part 200 Shoe upper 221 First groove part 222 Second groove part 421 Unidirectional intake valve 422 Intake pipe 431 Exhaust unidirectional valve 432 Multidirectional valve 433 Exhaust pipe 2221 Long groove part 2222 Side groove part T Length E Length

Claims

1. A blow-molded, full-piece, gas-injected air cushion, which is coupled to the outsole and includes a forefoot cushion, heel adjustment section, side contact section, and elastic suction unit, A front air chamber is formed inside the aforementioned forefoot cushion portion. The heel adjustment section has a rear air chamber formed inside, and a storage tank formed inwardly recessed on its top surface. The side contact portion is connected at both ends to the forefoot cushion portion and the heel adjustment portion, respectively, and forms a side air chamber inside, and the forefoot cushion portion, the heel adjustment portion and the side contact portion are integrally formed by blow molding. The aforementioned front air chamber, the aforementioned rear air chamber, and the aforementioned side air chambers are in communication with each other. The elastic suction unit is disposed in the containment tank and includes an elastic sac, an intake conduit group, and an exhaust conduit group. One end of the intake conduit group and the exhaust conduit group are connected to the elastic sac, and the other end of the exhaust conduit group is connected to the forefoot cushion and communicates with the front air chamber. A blow-molded, full-piece gas-filled air cushion, characterized in that when the elastic sac is deformed under pressure, the gas inside the elastic sac fills the front air chamber from the exhaust pipe group, filling the front air chamber, the rear air chamber, and the side air chamber, thereby supporting the forefoot, hindfoot, and lateral longitudinal arch of the foot.

2. The blow-molded full-piece gas-injected air cushion according to claim 1, characterized in that a plurality of reinforcing chambers corresponding to each other are formed in the top and bottom surfaces of the front foot cushion portion, reinforcing ribs are formed between each corresponding reinforcing chamber, and step portions are provided around the inner chamber wall surface of each reinforcing chamber, dividing the space within each reinforcing chamber, and the space near each reinforcing rib is smaller than the space near the opening of each reinforcing chamber.

3. Extended pieces are provided around the forefoot cushion portion, the top edge portion of the heel adjustment portion, and the top edge portion of one side of the side contact portion. The blow-molded full-piece gas-injected air cushion according to claim 1, characterized in that the extended piece is bonded to the shoe surface.

4. The aforementioned storage tank is divided into a first tank section and a second tank section. The first tank section is in communication with the second tank section, The elastic sac is attached to the first compartment, The blow-molded full-piece gas-injected air cushion according to claim 1, characterized in that the intake pipe group and the exhaust pipe group are respectively attached to the second tank section.

5. The second tank section is divided into a long tank section and a side tank section. The intake conduit group is located in the side chamber section, The exhaust pipe group is located within the long tank section and is connected to the adjustment member. The blow-molded full-piece gas-injected air cushion according to claim 4, characterized in that the adjustment member is located in the side tank and a portion of it is exposed from an adjustment port formed on one side of the side tank.

6. The adjustment member includes a valve, an adjustment part, and a gas release part. The valve portion is connected at one end to the exhaust pipe group and detachably attached at the other end to the adjustment portion. The gas release section is provided on one side of the valve section. The blow-molded full-piece gas-filled air cushion according to claim 5, characterized in that the adjustment unit rotates relative to the valve unit to limit the air pressure received in the front chamber, rear chamber, and side chamber, and when the air pressure inside the front chamber, rear chamber, and side chamber fills up and can no longer be filled, gas is released from the gas release unit.

7. The intake passage group includes a unidirectional intake valve and intake pipe, The aforementioned unidirectional intake valve has one end connected to the elastic sac and the other end connected to the intake pipe. The blow-molded full-piece gas-filled air cushion according to claim 4, characterized in that the intake tube sucks in and fills the gas inside the shoe.

8. The exhaust pipe group includes two single-direction exhaust valves, a multi-direction valve, and a plurality of exhaust pipes. The above-described arrangement combination consists of one exhaust unidirectional valve, one exhaust pipe, the multidirectional valve, the other exhaust pipe, and the other exhaust unidirectional valve. The blow-molded full-piece gas-injected air cushion according to claim 4, characterized in that the last exhaust unidirectional valve described above communicates with the pre-air chamber.

9. The blow-molded full-piece gas-injected air cushion according to claim 5, characterized in that the maximum width of the side contact portion is smaller than the distance from one side wall surface of the long tank portion to the adjustment port.

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