WO2004103106A1 - Air bag for shoes and its manufacturing method - Google Patents

Air bag for shoes and its manufacturing method Download PDF

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Publication number
WO2004103106A1
WO2004103106A1 PCT/KR2003/001255 KR0301255W WO2004103106A1 WO 2004103106 A1 WO2004103106 A1 WO 2004103106A1 KR 0301255 W KR0301255 W KR 0301255W WO 2004103106 A1 WO2004103106 A1 WO 2004103106A1
Authority
WO
WIPO (PCT)
Prior art keywords
airbag
shock
spring
support parts
lower sheet
Prior art date
Application number
PCT/KR2003/001255
Other languages
French (fr)
Inventor
Bum-Joon Kwon
Original Assignee
Bum-Joon Kwon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020030040943A external-priority patent/KR100578331B1/en
Application filed by Bum-Joon Kwon filed Critical Bum-Joon Kwon
Priority to AU2003244253A priority Critical patent/AU2003244253A1/en
Publication of WO2004103106A1 publication Critical patent/WO2004103106A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/181—Resiliency achieved by the structure of the sole
    • A43B13/182—Helicoidal springs
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
    • A43B21/26—Resilient heels
    • A43B21/28—Pneumatic heels filled with a compressible fluid, e.g. air, gas
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
    • A43B21/30—Heels with metal springs

Definitions

  • the present invention pertains to an airbag for shoes, which is inserted into a heel of a midsole to absorb a shock, and a method of producing the same. More particularly, the present invention relates to an airbag inserted in a midsole of a shoe, which includes a plurality of shock-absorbing springs, thereby securing an improved shock-absorbing effect by an air layer and the shock-absorbing springs in the airbag, and a method of producing the same.
  • a shoe includes an upper part corresponding to an upper leather and a lower part provided with a midsole and an outer sole.
  • the outer sole directly coming into contact with the ground is mostly made of synthetic rubbers so that shoes are not slipped on the ground, have high elasticity, and are not easily worn down.
  • the midsole functioning to absorb and alleviate the shock is made of polyurethane (PU), pylon, or ethylene vinyl acetate (EVA) resins which are light and easily molded.
  • PU polyurethane
  • EVA ethylene vinyl acetate
  • the shoes including the midsole made of the above resins haye a limited shock-absorbing effect because the resins have limited elasticity.
  • improved shoes have been commercially developed, which includes airbags acting as cushions inserted in the heels of midsoles.
  • the shoes including only the airbags are disadvantageous in that they have no desirable shock-absorbing effect when the airbags are broken or torn by large shocks.
  • an aspect of the present invention is to provide an airbag inserted in a heel of a midsole of a shoe, which includes a plurality of shock-absorbing springs, thereby securing an improved shock- absorbing effect by an air layer and the shock-absorbing springs in the airbag, and a method of producing the same.
  • the shoes including the airbags have a sufficient shock-absorbing effect by the shock-absorbing springs even though the airbags are broken or torn.
  • an airbag inserted in a midsole of a shoe to absorb shocks which includes a cavity formed by attaching edges of an upper and a lower sheet to each other and containing air.
  • the airbag includes a plurality of spring-support parts each attached to the upper and lower sheet at upper and lower ends thereof and positioned in the cavity in the airbag.
  • a plurality of shock-absorbing springs respectively fitted around the spring-support parts.
  • each of the spring- support parts includes a bellows pipe attached to the upper and lower sheet at upper and lower ends thereof. Furthermore, each of the spring-support parts is formed by pressing a predetermined portion of the upper or lower sheet to protrude the portion of the upper or lower sheet toward the lower or upper sheet and to attach an end of the protrusion of the upper or lower sheet to the lower or upper sheet. At this time, the protrusion of the spring-support parts are the same as the shock-absorbing springs in terms of height.
  • the above and/or other aspects are achieved by providing a method of producing an airbag including a plurality of shock-absorbing springs for shoes.
  • the method includes a first step of injection-molding an upper and a lower sheet constituting the airbag, a second step of attaching first ends of a plurality of bellows pipes having a same height as the shock-absorbing springs to the upper or lower sheet to form a plurality of spring-support parts, a third step of fitting each of the shock-absorbing springs around each of the spring-support parts, a fourth step of attaching ends of the spring- support parts protruded over the shock- absorbing springs to the lower or upper sheet using a press, and simultaneously attaching edges of the upper and lower sheet except for an air inlet to each other using the press to form a cavity between the upper and lower sheet and a fifth step of feeding air through the air inlet into the cavity and sealing the air inlet.
  • an airbag including a plurality of shock-absorbing springs for shoes including a first step of injection-molding an upper and a lower sheet constituting the airbag, a second step of pressing a plurality of portions of the upper or lower sheet to protrude the portions of the upper or lower sheet toward the lower or upper sheet to form a plurality of spring-support parts, the spring-support parts being same as the shock-absorbing springs in height, a third step of fitting each of the shock-absorbing springs around each of the spring-support parts, a fourth step of attaching each of the spring-support parts including the upper sheet fitted by each of the shock-absorbing springs to the lower sheet using a press, and simultaneously attaching edges of the upper and lower sheet except for an air inlet to each other using the press to form a cavity between the upper and lower sheet; and a fifth step of feeding air through the air inlet into the cavity and sealing the air inlet.
  • FIG. 1 illustrates an airbag for shoes according to the present invention, which is inserted into a midsole of a shoe;
  • FIG. 2 is a perspective view of an airbag for shoes according to the first embodiment of the present invention
  • FIG. 3 is a plan view of the airbag for shoes according to the first embodiment of the present invention
  • FIG. 4 is a sectional view of the airbag taken in the direction of the arrows along the line A- A' of FIG. 3;
  • FIG. 6 is a perspective view of an airbag for shoes according to the second embodiment of the present invention.
  • FIG. 7 is a pian view of the airbag for shoes of FIG. 6;
  • FIG. 9 is a perspective view of a shock-absorbing spring according to the present invention.
  • FIG. 10 is a flow chart illustrating the production of the airbag for shoes according to the second embodiment of the present invention.
  • FIG. 2 is a perspective view of the airbag for shoes according to the first embodiment of the present invention, in which a plurality of springs 20 are installed in a cavity in the airbag 10.
  • FIG. 3 is a plan view of the airbag for shoes according to the first embodiment of the present invention, in which the springs 20 and a plurality of bellows pipes 30 are installed in the airbag 10.
  • the bellows pipes 30 are attached to an interior bottom of the cavity in the airbag 10 using a press in such a way that they are positioned at regular intervals, and each of the springs 20 is fitted around each of the bellows pipes 30 on the interior bottom of the cavity.
  • the bellows pipes 30 are made of a flexible hose, thus they may be deformed with the deformation of the springs 20.
  • the bellows pipes 30 function to support the springs 20 so that the springs 20 do not depart from their own positions and are not bent.
  • FIG. 4 there is illustrated a sectional view of the airbag 10 taken in the direction of the arrows along the line A- A' of FIG. 3.
  • the bellows pipes 30 are fixedly positioned on the interior bottom of the cavity in the airbag 10, and each of the springs 20 is fitted around each of the bellows pipes 30. Accordingly, air and the springs 20 in the airbag 10 greatly reduce the impact, and the shoes including the airbag 10 may have a sufficient shock-absorbing effect even though the airbag 10 is torn or broken because the springs 20 act to reduce the impact.
  • FIG. 5 is a flow chart illustrating the production of the airbag 10 for shoes according to the first embodiment of the present invention.
  • an upper sheet 15 and a lower sheet 16 are produced through an injection molding process, the bellows pipes 30 are attached to an interior bottom of the lower sheet 16 using a press in such a way that they are positioned at regular intervals, and each of the springs 20 is then fitted around each of the bellows pipes 30.
  • Edges of the upper sheet 15 having an air inlet 12 are attached to the edges of the lower sheet 16 to form the cavity. After air is fed through the air inlet 12 of the upper sheet 15 into the cavity, the cavity is sealed using the press to accomplish the airbag 10.
  • FIG. 6 is a perspective view of an airbag for shoes according to the second embodiment of the present invention, in which a plurality of springs 20 are installed in a cavity in the airbag 10. Additionally, FIG. 7 is a plan view of the airbag of FIG. 6.
  • a plurality of portions of an upper sheet 15 or a lower sheet 16 constituting the airbag 10 are protruded using a press to form a plurality of spring-support parts 30.
  • the heights of the spring-support parts 30 are the same as those of the springs 20.
  • Each of the springs 20 is fitted around each of the spring-support parts
  • FIG. 9 there is illustrated a perspective view of a shock- absorbing spring 20 according to the present invention, in which both ends of the spring 20 are slightly bent so that the both ends of the spring come into contact with an inner circumferential side of the spring 20 when the spring 20 is compressed.
  • the reason for this is that the both ends of the spring 20 are not protruded when the upper and lower sheet 15, 16 are pressed between the feet and the ground, thereby reducing the risk that the airbag 10 will be torn by the spring 20.
  • FIG. 10 is a flow chart illustrating the production of the airbag for shoes according to the second embodiment of the present invention.
  • the upper and lower sheet 15, 16 are produced through an injection molding process, the spring-support parts 30 are formed as a way to be positioned at regular intervals by pressing a plurality of portions of the lower sheet 16 toward the upper sheet 15, and each of the springs 20 is then fitted around each of the spring-support parts 30.
  • the ends of the spring-support parts 30 of the lower sheet 16 are attached to the upper sheet 15 using a press, and the edges of the upper sheet 15 except for an air inlet 12 are attached to the edges of the lower sheet 16 using the press to form the cavity. Air is then fed through the air inlet 12 into the cavity formed by the upper and lower sheet 15, 16, and the air inlet 12 of the cavity is sealed to form the airbag 10 including the springs 20.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

The object of this invention is to provide an airbag (10) inserted in a heel of a midsole of a shoe, which includes a plurality of shock-absorbing springs (20), and a method of producing the same. The airbag having a cavity formed by attaching edges of an upper and a lower sheet (15, 16) to each other and containing air, includes a plurality of spring-support parts (30) each attached to the upper and lower sheets (15, 16) at upper and lower ends thereof and positioned in the cavity in the airbag (10). The shock-absorbing springs (20) are respectively fitted around the spring-support parts (30). Because the airbag includes the shock-absorbing springs, shoes including the airbags have an improved shock-absorbing effect by an air layer and the shock-absorbing springs in the airbags, and maintain a sufficient shock-absorbing effect by the springs even though the airbag is torn or broken.

Description

AIR BAG FOR SHOES AND ITS MANUFACTURING METHOD
Technical Field
The present invention pertains to an airbag for shoes, which is inserted into a heel of a midsole to absorb a shock, and a method of producing the same. More particularly, the present invention relates to an airbag inserted in a midsole of a shoe, which includes a plurality of shock-absorbing springs, thereby securing an improved shock-absorbing effect by an air layer and the shock-absorbing springs in the airbag, and a method of producing the same.
Background Art
When a man walks or runs, his feet function to support his body and shock caused by the contact between his feet and the surface is directly applied to his feet. In particular, his feet are continuously exposed to greater shock than that resulting from exercise. Accordingly, wearing shock-absorbing shoes is good for his health, and the shock-absorbing shoes contribute to protect his feet from the shock and alleviate the shock applied to his feet.
Generally, a shoe includes an upper part corresponding to an upper leather and a lower part provided with a midsole and an outer sole. The outer sole directly coming into contact with the ground is mostly made of synthetic rubbers so that shoes are not slipped on the ground, have high elasticity, and are not easily worn down. Additionally, the midsole functioning to absorb and alleviate the shock is made of polyurethane (PU), pylon, or ethylene vinyl acetate (EVA) resins which are light and easily molded.
However, the shoes including the midsole made of the above resins haye a limited shock-absorbing effect because the resins have limited elasticity. Hence, improved shoes have been commercially developed, which includes airbags acting as cushions inserted in the heels of midsoles. However, the shoes including only the airbags are disadvantageous in that they have no desirable shock-absorbing effect when the airbags are broken or torn by large shocks.
Disclosure of the Invention
Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an aspect of the present invention is to provide an airbag inserted in a heel of a midsole of a shoe, which includes a plurality of shock-absorbing springs, thereby securing an improved shock- absorbing effect by an air layer and the shock-absorbing springs in the airbag, and a method of producing the same. In this regard, the shoes including the airbags have a sufficient shock-absorbing effect by the shock-absorbing springs even though the airbags are broken or torn.
Additional aspects and/or advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
The above and/or other aspects are achieved by providing an airbag inserted in a midsole of a shoe to absorb shocks, which includes a cavity formed by attaching edges of an upper and a lower sheet to each other and containing air. The airbag includes a plurality of spring-support parts each attached to the upper and lower sheet at upper and lower ends thereof and positioned in the cavity in the airbag. In this regard, a plurality of shock-absorbing springs respectively fitted around the spring-support parts.
At this time, each of the spring- support parts includes a bellows pipe attached to the upper and lower sheet at upper and lower ends thereof. Furthermore, each of the spring-support parts is formed by pressing a predetermined portion of the upper or lower sheet to protrude the portion of the upper or lower sheet toward the lower or upper sheet and to attach an end of the protrusion of the upper or lower sheet to the lower or upper sheet. At this time, the protrusion of the spring-support parts are the same as the shock-absorbing springs in terms of height.
The above and/or other aspects are achieved by providing a method of producing an airbag including a plurality of shock-absorbing springs for shoes. The method includes a first step of injection-molding an upper and a lower sheet constituting the airbag, a second step of attaching first ends of a plurality of bellows pipes having a same height as the shock-absorbing springs to the upper or lower sheet to form a plurality of spring-support parts, a third step of fitting each of the shock-absorbing springs around each of the spring-support parts, a fourth step of attaching ends of the spring- support parts protruded over the shock- absorbing springs to the lower or upper sheet using a press, and simultaneously attaching edges of the upper and lower sheet except for an air inlet to each other using the press to form a cavity between the upper and lower sheet and a fifth step of feeding air through the air inlet into the cavity and sealing the air inlet.
The above and/or other aspects are achieved by providing a method of producing an airbag including a plurality of shock-absorbing springs for shoes, including a first step of injection-molding an upper and a lower sheet constituting the airbag, a second step of pressing a plurality of portions of the upper or lower sheet to protrude the portions of the upper or lower sheet toward the lower or upper sheet to form a plurality of spring-support parts, the spring-support parts being same as the shock-absorbing springs in height, a third step of fitting each of the shock-absorbing springs around each of the spring-support parts, a fourth step of attaching each of the spring-support parts including the upper sheet fitted by each of the shock-absorbing springs to the lower sheet using a press, and simultaneously attaching edges of the upper and lower sheet except for an air inlet to each other using the press to form a cavity between the upper and lower sheet; and a fifth step of feeding air through the air inlet into the cavity and sealing the air inlet. Brief Description of the Drawings
These and other aspects and advantages of the present invention will become apparent and more easily appreciated from the following description of the preferred embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 illustrates an airbag for shoes according to the present invention, which is inserted into a midsole of a shoe;
FIG. 2 is a perspective view of an airbag for shoes according to the first embodiment of the present invention; FIG. 3 is a plan view of the airbag for shoes according to the first embodiment of the present invention;
FIG. 4 is a sectional view of the airbag taken in the direction of the arrows along the line A- A' of FIG. 3;
FIG. 5 is a flow chart illustrating the production of the airbag for shoes according to the first embodiment of the present invention;
FIG. 6 is a perspective view of an airbag for shoes according to the second embodiment of the present invention;
FIG. 7 is a pian view of the airbag for shoes of FIG. 6;
FIG. 8 is a sectional view of the airbag taken in the direction of the arrows along the line B-B' of FIG. 7;
FIG. 9 is a perspective view of a shock-absorbing spring according to the present invention; and
FIG. 10 is a flow chart illustrating the production of the airbag for shoes according to the second embodiment of the present invention.
Best Mode for Carrying Out the Invention
Reference should now be made to the drawings, in which the same reference numerals are used throughout the different drawings to designate the same or similar components.
As shown in the drawings, FIG. 1 illustrates an airbag for shoes according to the present invention, which is inserted into a midsole of a shoe. In this regard, the airbag 10 is inserted in a heel of the midsole 40. The airbag 10 includes a cavity filled with air, and a plurality of springs 20 are installed in the cavity to absorb shocks applied to a user by the springs 20 and an air layer in the cavity when the user wearing the shoes including the airbag 10 walks or runs.
In the present invention, the airbag 10 is made of a transparent material so as to reveal the springs 20 therein, but it is to be understood that modifications will be apparent to those skilled in the art without departing from the spirit of the invention.
FIG. 2 is a perspective view of the airbag for shoes according to the first embodiment of the present invention, in which a plurality of springs 20 are installed in a cavity in the airbag 10. FIG. 3 is a plan view of the airbag for shoes according to the first embodiment of the present invention, in which the springs 20 and a plurality of bellows pipes 30 are installed in the airbag 10.
The bellows pipes 30 are attached to an interior bottom of the cavity in the airbag 10 using a press in such a way that they are positioned at regular intervals, and each of the springs 20 is fitted around each of the bellows pipes 30 on the interior bottom of the cavity. For example, the bellows pipes 30 are made of a flexible hose, thus they may be deformed with the deformation of the springs 20. Additionally, because each of the bellows pipes 30 is fitted by each of the springs 20, the bellows pipes 30 function to support the springs 20 so that the springs 20 do not depart from their own positions and are not bent. With reference to FIG. 4, there is illustrated a sectional view of the airbag 10 taken in the direction of the arrows along the line A- A' of FIG. 3. At this time, the bellows pipes 30 are fixedly positioned on the interior bottom of the cavity in the airbag 10, and each of the springs 20 is fitted around each of the bellows pipes 30. Accordingly, air and the springs 20 in the airbag 10 greatly reduce the impact, and the shoes including the airbag 10 may have a sufficient shock-absorbing effect even though the airbag 10 is torn or broken because the springs 20 act to reduce the impact.
FIG. 5 is a flow chart illustrating the production of the airbag 10 for shoes according to the first embodiment of the present invention. According to a method of producing the airbag 10, an upper sheet 15 and a lower sheet 16 are produced through an injection molding process, the bellows pipes 30 are attached to an interior bottom of the lower sheet 16 using a press in such a way that they are positioned at regular intervals, and each of the springs 20 is then fitted around each of the bellows pipes 30. Edges of the upper sheet 15 having an air inlet 12 are attached to the edges of the lower sheet 16 to form the cavity. After air is fed through the air inlet 12 of the upper sheet 15 into the cavity, the cavity is sealed using the press to accomplish the airbag 10.
FIG. 6 is a perspective view of an airbag for shoes according to the second embodiment of the present invention, in which a plurality of springs 20 are installed in a cavity in the airbag 10. Additionally, FIG. 7 is a plan view of the airbag of FIG. 6.
According to the second embodiment of the present invention, a plurality of portions of an upper sheet 15 or a lower sheet 16 constituting the airbag 10 are protruded using a press to form a plurality of spring-support parts 30. At this time, the heights of the spring-support parts 30 are the same as those of the springs 20.
Each of the springs 20 is fitted around each of the spring-support parts
30. Ends of the spring-support parts 30 are attached to the opposite sheet, and edges of the upper sheet 15 are attached to edges of the lower sheet 16 to form the airbag 10. Air is then fed into the airbag 10 to fill the cavity in the airbag 10 with the air, thereby accomplishing the airbag 10 including the springs 20 and an air layer.
Referring to FIG. 8, there is illustrated a sectional view of the airbag 10 taken in the direction of the arrows along the line B-B' of FIG. 7. In this regard, the spring-support parts 30 are protruded from an interior bottom of the cavity in the airbag 10, and each of the springs 20 is fitted around each of the spring- support parts 30.
Turning to FIG. 9, there is illustrated a perspective view of a shock- absorbing spring 20 according to the present invention, in which both ends of the spring 20 are slightly bent so that the both ends of the spring come into contact with an inner circumferential side of the spring 20 when the spring 20 is compressed. The reason for this is that the both ends of the spring 20 are not protruded when the upper and lower sheet 15, 16 are pressed between the feet and the ground, thereby reducing the risk that the airbag 10 will be torn by the spring 20.
As described above, the air and spring 20 in the airbag 10 act to reduce the impact, and the shoes including the airbag 10 have a sufficient shock- absorbing effect by the spring 20 even though the airbag 10 is torn or broken due to its long-term use or the shock. FIG. 10 is a flow chart illustrating the production of the airbag for shoes according to the second embodiment of the present invention.
In FIG. 10, the upper and lower sheet 15, 16 are produced through an injection molding process, the spring-support parts 30 are formed as a way to be positioned at regular intervals by pressing a plurality of portions of the lower sheet 16 toward the upper sheet 15, and each of the springs 20 is then fitted around each of the spring-support parts 30. The ends of the spring-support parts 30 of the lower sheet 16 are attached to the upper sheet 15 using a press, and the edges of the upper sheet 15 except for an air inlet 12 are attached to the edges of the lower sheet 16 using the press to form the cavity. Air is then fed through the air inlet 12 into the cavity formed by the upper and lower sheet 15, 16, and the air inlet 12 of the cavity is sealed to form the airbag 10 including the springs 20.
Industrial Applicability
As apparent from the above description, the present invention provides an airbag inserted in a heel of a midsole of a shoe, which includes a plurality of shock-absorbing springs, thereby an improved shock-absorbing effect is secured by an air layer and the shock-absorbing springs in the midsole. Furthermore, the shoes including the airbag have a sufficient shock-absorbing effect by the springs even though the airbag is torn or broken.
Although few preferred embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

Claims
1. An airbag for shoes inserted in a midsole of a shoe to absorb shocks, which includes a cavity formed by attaching edges of an upper and a lower sheet to each other and containing air, comprising: a plurality of spring-support parts each attached to the upper and' lower sheet at upper and lower ends thereof and positioned in the cavity in the airbag; and a plurality of shock-absorbing springs respectively fitted around the spring-support parts.
2. The airbag for shoes as set forth in claim 1, wherein each of the spring-support parts comprises a bellows pipe attached to the upper and lower sheet at upper and lower ends thereof.
3. The airbag for shoes as set forth in claim 1, wherein each of the spring-support parts is formed by pressing a predetermined portion of the upper or lower sheet to protrude the portion of the upper or lower sheet toward the lower or upper sheet and to attach an end of a protrusion of the upper or lower sheet to the lower or upper sheet, the protrusion of each of the spring- support parts being same as each of the shock-absorbing springs in height.
4. A method of producing an airbag including a plurality of shock- absorbing springs for shoes, comprising: a first step of injection-molding an upper and a lower sheet constituting the airbag; a second step of attaching first ends of a plurality of bellows pipes having a same height as the shock-absorbing springs to the upper or lower sheet to form a plurality of spring-support parts; a third step of fitting each of the shock-absorbing springs around each of the spring- support parts; a fourth step of attaching ends of the spring-support parts protruded over the shock-absorbing springs to the lower or upper sheet using a press, and simultaneously attaching edges of the upper and lower sheet except for an air inlet to each other using the press to form a cavity between the upper and lower sheet; and a fifth step of feeding air through the air inlet into the cavity and sealing the air inlet.
5. A method of producing an airbag including a plurality of shock- absorbing springs for shoes, comprising: a first step of injection-molding an upper and a lower sheet constituting the airbag; a second step of pressing a plurality of portions of the upper or lower sheet to protrude the portions of the upper or lower sheet toward the lower or upper sheet to form a plurality of spring-support parts, the spring-support parts being same as the shock-absorbing springs in height; a third step of fitting each of the shock-absorbing springs around each of the spring-support parts; a fourth step of attaching each of the spring-support parts including the upper sheet fitted by each of the shock-absorbing springs to the lower sheet using a press, and simultaneously attaching edges of the upper and lower sheet except for an air inlet to each other using the press to form a cavity between the upper and lower sheet; and a fifth step of feeding air through the air inlet into the cavity and sealing the air inlet.
PCT/KR2003/001255 2003-05-20 2003-06-26 Air bag for shoes and its manufacturing method WO2004103106A1 (en)

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Application Number Priority Date Filing Date Title
AU2003244253A AU2003244253A1 (en) 2003-05-20 2003-06-26 Air bag for shoes and its manufacturing method

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Application Number Priority Date Filing Date Title
KR20030032052 2003-05-20
KR10-2003-0032052 2003-05-20
KR10-2003-0040943 2003-06-24
KR1020030040943A KR100578331B1 (en) 2003-05-20 2003-06-24 Air bag for shoes and its manufacturing method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109984425A (en) * 2019-04-26 2019-07-09 泉州寰球鞋服有限公司 A kind of shock-absorbing sole with air bag

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014084A1 (en) * 1996-10-03 1998-04-09 Lombardino Thomas D Spring-air shock absorption and energy return device for shoes
KR200259486Y1 (en) * 2001-08-25 2002-01-09 한선희 shoes
US20020073579A1 (en) * 1999-04-29 2002-06-20 Lombardino Thomas D. Article of footwear incorporating a shock absorption and energy return assembly for shoes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014084A1 (en) * 1996-10-03 1998-04-09 Lombardino Thomas D Spring-air shock absorption and energy return device for shoes
US20020073579A1 (en) * 1999-04-29 2002-06-20 Lombardino Thomas D. Article of footwear incorporating a shock absorption and energy return assembly for shoes
KR200259486Y1 (en) * 2001-08-25 2002-01-09 한선희 shoes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109984425A (en) * 2019-04-26 2019-07-09 泉州寰球鞋服有限公司 A kind of shock-absorbing sole with air bag

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