WO2006038782A1 - Amortisseur de chocs pour chaussures - Google Patents

Amortisseur de chocs pour chaussures Download PDF

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Publication number
WO2006038782A1
WO2006038782A1 PCT/KR2005/003276 KR2005003276W WO2006038782A1 WO 2006038782 A1 WO2006038782 A1 WO 2006038782A1 KR 2005003276 W KR2005003276 W KR 2005003276W WO 2006038782 A1 WO2006038782 A1 WO 2006038782A1
Authority
WO
WIPO (PCT)
Prior art keywords
shock absorber
pad
high frequency
heat sealing
frequency heat
Prior art date
Application number
PCT/KR2005/003276
Other languages
English (en)
Inventor
Cheol-Su Park
Beom-Jun Park
Original Assignee
Gb Korea Co., Ltd.
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 KR1020040079906A external-priority patent/KR100464521B1/ko
Priority claimed from KR1020050001042A external-priority patent/KR20060080660A/ko
Application filed by Gb Korea Co., Ltd. filed Critical Gb Korea Co., Ltd.
Publication of WO2006038782A1 publication Critical patent/WO2006038782A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
    • B29D35/14—Multilayered parts
    • B29D35/142—Soles
    • 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

Definitions

  • the present invention relates to a shock absorber for manufacturing a shock-absorbing shoe having springs installed therein, and more particularly to a shock absorber for shoes, in which an air cover and high frequency heat sealing support rods are formed by a high frequency heat sealing method during the connection of an upper pad and a lower pad so that the air cover is formed by the side surface of the upper pad without a separate step of forming the air cover by surrounding edges of the upper and lower pads with a synthetic resin and a step of installing anti-extension wires in coil springs, thereby shortening a time taken to perform a manufacturing process, reducing production costs, and preventing tearing of the air cover and leakage of air through the torn air cover.
  • shock of a considerable degree is applied to ankles or knees of the person wearing the shoes.
  • the shock is transmitted to the ankles or knees of the person, and the transmitted shock causes inconvenience, fatigue, and injury to the person wearing the shoes.
  • middle-age women or elderly persons wear general shoes as well as sports shoes, golf shoes, or mountain-climbing shoes, shock is applied to ankles or knees of the person wearing the shoes, and thus causes injury to the ankles or knees of the persons or causes arthritis to the persons.
  • a general sports shoe comprises a shock-absorbing cushion installed on a mid sole at the rear portion of the sports shoe for absorbing shock generated when load due to the weight of a person wearing the sports shoe is applied downwards.
  • the shock-absorbing cushion is made of rubber or sponge, and has air tubes installed therein.
  • the sports shoe comprises an outsole forming the sole of the sports shoe, the mid sole attached to the upper surface of the outsole, and an upper sole forming the upper portion of the sports shoe.
  • An insole contacting a foot of a person wearing the shoe is attached to the upper surface of the mid sole in the shoe.
  • the air tubes for absorbing shock are installed on the mid sole at the front and rear portions of the sports shoe.
  • Korean Utility Model Registration No. 20-0176002 discloses a shock- absorbing shoe having springs installed on a mid sole.
  • an air tube sports shoe having springs for absorbing shock installed therein has been developed.
  • the shoe having springs does not comprise a protector for fixing the springs when the springs are compressed. Accordingly, when the springs are compressed by external shock and rub against upper and lower pads of the shoe, the springs are broken or damaged, are separated from corresponding protrusions, and are exposed to the outside through the sole of the shoe. Thus, the above shock-absorbing shoe cannot be practically used. Further, the shoe, as disclosed in the Korean Utility Model Registration No.
  • 20-0176002 is manufactured by a process, in which the upper pad, the lower pad, and through holes for receiving the springs are respectively made using separate molds by injection molding and are then bonded by a high frequency heat sealing method or a bonding method, thus being incapable of being practically used.
  • Korean Patent Application No. 2003-53584 discloses a shock absorber having coil springs installed on a mid sole of a shoe.
  • the coil springs of the shock absorber are compressed or extended, the coil springs are separated from corresponding flanges or are damaged. That is, when the coil springs of the shock absorber, as disclosed in Korean Patent Application No. 2003-53584, are compressed by the shock applied to the shoe, the circular-shaped flanges for receiving the coil springs cannot serve as protecting rods for supporting and protecting the coil springs, and are broken or damaged by the shock.
  • the coil springs of the shock absorber as disclosed in Korean Patent Application No.
  • the mid sole of the shoe When the shock absorber, as disclosed in Korean Patent Application No. 2003-53584, is manufactured, the mid sole of the shoe must have a separate chamber for installing the shock absorber therein. Further, since the shock absorber is installed in the chamber of the mid sole after the manufacturing of the mid sole, the mid sole must be manufactured by a high frequency heat sealing method or a bonding method, and cannot be manufactured by a phylon (foamed ethylene vinyl acetate) injecting method. In the case that the shock absorber, as disclosed in Korean Patent Application No. 2003-53584, does not comprise an external air cover, the mid sole cannot be manufactured by the phylon injection method, and is instead manufactured by the bonding method.
  • the shock absorber does not comprise an external air cover
  • phylon is injected into the shock absorber and spaces between the coil springs.
  • the shoe having the above shock absorber cannot be manufactured by the phylon injection method.
  • Korean Patent Application No. 2004-51432 discloses a shock absorber comprising upper and lower pads arranged symmetrically and having a plurality of elastic body fixing protrusions formed on the inner surfaces thereof corresponding to each other for fixing coil springs; the coil springs fixed to the elastic body fixing protrusions of the upper and lower pads; and an external air cover surrounding edges of the upper and lower pads to form an air chamber installed therein and filled with air. Since the shock absorber, as disclosed in Korean Patent Application No. 2004-51432, comprises the external air cover surrounding the edges of the upper and lower pads and filled with air, the external air cover is separately formed using a synthetic resin after the upper and lower pads are interconnected. Further, since the external air cover of the shock absorber, as disclosed in Korean Patent Application No. 2004-51432, is manufactured by surrounding the edges of the interconnected upper and lower pads with the synthetic resin and by performing a high frequency heat sealing method, the external air cover may be broken or air is leaked to the outside through the broken portions of the external air cover.
  • Korean Patent Application No. 2004-57566 discloses a shock absorber for shoes, in which anti-extension wires pass through coil springs and both ends of the anti-extension wires are fixed to upper and lower pads so as to prevent the coil springs from being separated from the upper and lower pads. Since the anti- extension wires of the shock absorber, as disclosed in Korean Patent Application No. 2004-57566, are installed in the coil springs such that both ends of the anti- extension wires are fixed to the upper and lower pads, the anti-extension wires are broken or expanded, thereby causing troublesomeness and complicatedness in a step of installing the anti-extension wires in the coil springs.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide, as an improvement of a shock absorber of the applicant disclosed in Korean Patent Application No. 2004-79906, a shock absorber for shoes, in which an air cover and high frequency heat sealing support rods are simultaneously formed by a high frequency heat sealing method during the connection of an upper pad and a lower pad so that the air cover is formed by the side surface of the upper pad without a separate step of forming an air cover by surrounding edges of the upper and lower pads with a synthetic resin and a step of installing anti- extension wires in coil springs, thereby shortening a time taken to perform a manufacturing process, reducing production costs, and preventing tearing of the air cover and leakage of air through the torn air cover.
  • a shock absorber for shoes which has springs installed therein, comprising: an upper pad and a lower pad arranged symmetrically; and an external air cover surrounding edges of the upper and lower pads to form an air chamber, the inside of which is filled with air, and obtained by bonding a high frequency heat sealing plane of the upper pad to the lower pad using a high frequency heat sealing method under the condition that the high frequency heat sealing plane of the upper pad contacts the lower pad.
  • the shock absorber may have the shape of a heel or sole of a shoe.
  • An elastic body may be bonded to inner surfaces of the upper and lower pads.
  • the elastic body may have one type selected from the group consisting of a plate member, a plurality of bags, and a plurality of protrusions.
  • the elastic body may be made of one selected from the group consisting of sponge, elastic rubber, phylon, polyurethane, elastomer, synthetic elastic resin, elastic air bags, and elastic water bags.
  • the elastic body When the elastic body is a plate member, a plurality of through holes may be formed through the elastic body.
  • the elastic body may be made of one selected from the group consisting of sponge, elastic rubber, phylon, polyurethane, elastomer, synthetic elastic resin, elastic air bags, and elastic water bags.
  • elastic body fixing protrusions may be formed on the upper and lower pads.
  • An elastic plate member having through holes may be inserted between the elastic body fixing protrusions of the upper and lower pads.
  • the elastic plate member may be bonded to inner surfaces of the upper and lower pads.
  • the elastic plate member may be made of one selected from the group consisting of sponge, elastic rubber, phylon, polyurethane, elastomer, and synthetic elastic resin.
  • the elastic body fixing protrusions may be respectively inserted into elastic rings.
  • the elastic rings may be bonded to inner surfaces of the upper and lower pads.
  • the elastic rings may be made of one selected from the group consisting of sponge, elastic rubber, phylon, polyurethane, elastomer, and synthetic elastic resin.
  • high frequency heat sealing support rods may be formed on inner surfaces of the upper and lower pads corresponding to each other.
  • the high frequency heat sealing support rods may be formed on the inner surface of the upper pad, the inner surface of the lower pad, or the inner surfaces of the upper and lower pads.
  • elastic body fixing protrusions may be formed between the high frequency heat sealing support rods.
  • the elastic body fixing protrusions may be respectively inserted into elastic rings.
  • the elastic rings may be made of one selected from the group consisting of sponge, elastic rubber, phylon, polyurethane, elastomer, and synthetic elastic resin.
  • a space may be formed in the inner surface of the upper pad for bonding an elastic body to the upper pad.
  • the upper pad may comprise high frequency heat sealing support rods formed on the inner surface thereof; a side surface formed on the edge of the upper pad so as to form an external air cover surrounding the edges of the upper and lower pads and filled with air; and the high frequency heat sealing plane extended from the side surface for performing high frequency heat sealing under the condition that the high frequency heat sealing plane of the upper pad contacts a side surface of the lower pad.
  • Elastic body fixing protrusions for fixing an elastic body may be formed on the inner surface of the upper pad.
  • the upper pad may be formed by injection-molding synthetic resin.
  • a space may be formed in the inner surface of the lower pad for bonding an elastic body to the lower pad.
  • the lower pad may comprise high frequency heat sealing support rods formed on the inner surface thereof; and a side surface formed on the edge of the lower pad for performing high frequency heat sealing under the condition that the high frequency heat sealing plane of the upper pad contacts the side surface of the lower pad so as to form an external air cover surrounding the edges of the upper and lower pads and filled with air.
  • Elastic body fixing protrusions for fixing an elastic body may be formed on the inner surface of the lower pad.
  • the lower pad may be formed by injection-molding synthetic resin. An air injection hole may be formed through the external air cover.
  • a method for manufacturing a shock absorber for shoes comprising: preparing an upper pad having a side surface formed on the edge thereof so as to form an external air cover surrounding the edges of the upper and lower pads and filled with air, and a high frequency heat sealing plane extended from the side surface for performing high frequency heat sealing under the condition that the high frequency heat sealing plane of the upper pad contacts a side surface of the lower pad; preparing a lower pad having the side surface formed on the edge thereof for performing high frequency heat sealing under the condition that the high frequency heat sealing plane of the upper pad contacts the side surface of the lower pad so as to form the external air cover surrounding the edges of the upper and lower pads and filled with air; connecting the upper and lower pads such that the upper and lower pads are arranged symmetrically and correspond to each other; simultaneously performing high frequency heat sealing of the high frequency heat sealing plane and high frequency heat sealing support rods formed on the upper and lower pads under the condition that the high frequency heat sealing plane of the upper pad contacts the side surface of
  • one to five hundred high frequency heat sealing support rods may be formed on the inner surfaces of the upper and lower pads corresponding to each other.
  • the elastic body installed in the shock absorber may preferably have a hardness of 10 ⁇ l,000 Shore/A (after 24 hours), and more preferably have a hardness of 50 ⁇ 100 Shore/A (after 24 hours).
  • One to five hundred elastic body fixing protrusions, into which the elastic rings are inserted, may be formed on the inner surfaces of the upper and lower pads.
  • one to five hundred high frequency heat sealing support rods are formed on the inner surface of the lower pad, and one to five hundred elastic body fixing protrusions for fixing one to five hundred elastic bodies are formed on the inner surface of the lower pad.
  • a shock absorber for shoes in accordance with the present invention comprises an air cover and high frequency heat sealing support rods, which are simultaneously formed by a high frequency heat sealing method during the connection of an upper pad and a lower pad so that the air cover is formed by the side surface of the upper pad without a separate step of forming the air cover by surrounding edges of the upper and lower pads with a synthetic resin and a step of installing anti-extension wires in coil springs, thereby shortening a time taken to perform a manufacturing process, reducing production costs, and preventing tearing of the air cover and leakage of air through the torn air cover.
  • a shoe employing the shock absorber is manufactured by a phylon injection method under the condition that the shock absorber is injected into upper and lower injection molds in the case that a mid sole of the shoe is manufactured by the phylon injection method, the method of the present invention shortens a time taken to perform a shoes manufacturing process, reduces shoes production costs, and increases the probability of shoes mass production.
  • FIG. 1 is a perspective view of a sole-type shock absorber for shoes in accordance with a first embodiment of the present invention
  • FIG. 2 is an exploded perspective view of the sole-type shock absorber for shoes in accordance with the first embodiment of with the present invention
  • FIG. 3 is an exploded perspective view of the sole-type shock absorber for shoes in accordance with the first embodiment of with the present invention
  • FIG. 4 is an exploded perspective view of a sole-type shock absorber for shoes in accordance with a second embodiment of with the present invention
  • FIG. 5 is an exploded perspective view of the sole-type shock absorber for shoes in accordance with the second embodiment of the present invention.
  • FIG. 6 is an exploded perspective view of the sole-type shock absorber for shoes in accordance with the second embodiment of the present invention.
  • FIG. 7 is a perspective view of the sole-type shock absorber for shoes in accordance with the second embodiment of the present invention.
  • FIG. 8 is an exploded perspective view of the sole-type shock absorber for shoes in accordance with the second embodiment of the present invention.
  • FIG. 9 is a sectional view of the sole-type shock absorber for shoes in accordance with the second embodiment of the present invention.
  • FIG. 10 is a perspective view of a heel-type shock absorber for shoes in accordance with a third embodiment of the present invention.
  • FIG. 11 is an exploded perspective view of the heel-type shock absorber for shoes in accordance with the third embodiment of the present invention.
  • FIG. 12 is an exploded perspective view of the heel-type shock absorber for shoes in accordance with the third embodiment of the present invention.
  • FIG. 13 is an exploded perspective view of a heel-type shock absorber for shoes in accordance with a fourth embodiment of the present invention.
  • FIG. 14 is an exploded perspective view of the heel-type shock absorber for shoes in accordance with the fourth embodiment of the present invention
  • FIG. 15 is a perspective view of the heel-type shock absorber for shoes in accordance with the fourth embodiment of the present invention.
  • FIG. 16 is an exploded perspective view of the heel-type shock absorber for shoes in accordance with the fourth embodiment of the present invention.
  • FIG. 17 is a sectional view of a shoe, in which the heel-type shock absorbers of the present invention are installed.
  • FIG. 18 is an exploded perspective view of the shoe, in which the heel- type shock absorbers of the present invention are installed.
  • an upper pad 210 and a lower pad 220 are prepared.
  • the upper pad 210 has a side surface 218 formed on the edge thereof so as to form an external air cover 240 surrounding the edges of the upper and lower pads 210 and 220 and filled with air, and a high frequency heat sealing plane 216 extended from the side surface 218 for performing high frequency heat sealing under the condition that the high frequency heat sealing plane 216 of the upper pad 210 contacts a side surface 226 of the lower pad 220.
  • the lower pad 220 has the side surface 226 formed on the edge thereof for performing high frequency heat sealing under the condition that the high frequency heat sealing plane 216 of the upper pad 210 contacts the side surface 226 of the lower pad 220 so as to form the external air cover 240 surrounding the edges of the upper and lower pads 210 and 220 and filled with air.
  • An elastic plate member 310 which is made of a polyurethane elastic body and has a hardness of 90 Shore/A (after 24 hours), is inserted between the inner surface of the upper pad 210 and the inner surface of the lower pad 220 by bonding, and the upper pad 210 and the lower pad 220 are interconnected such that the upper pad 210 and the lower pad 220 are arranged symmetrically and correspond to each other.
  • High frequency heat sealing of the high frequency heat sealing plane 216 of the upper pad 210 is performed under the condition that the high frequency heat sealing plane 216 of the upper pad 210 contacts the side surface 226 of the lower pad 220, thereby forming the external air cover 240, which surrounds the edges of the upper pad 210 and the lower pad 220 and is filled with gas.
  • An air injection hole 250 is formed through the high frequency heat sealing plane 216 of the upper pad 210. After air is injected into the external air cover 240 through the air injection hole 250, the air injection hole 250 is closed. Thereby, the sole-type shock absorber for shoes in accordance with the first embodiment is manufactured.
  • ⁇ Second embodiment Manufacturing a sole-type shock absorber for shoes with elastic body fixing protrusions and without high frequency heat sealing support rods> As shown in FIG. 5, instead of the upper pad 210 and the lower pad 220 used in the first embodiment, an upper pad 210 having elastic body fixing protrusions 212 formed on the inner surface thereof and a lower pad 220 having elastic body fixing protrusions 222 formed on the inner surface thereof are prepared.
  • the sole-type shock absorber for shoes in accordance with the second embodiment is manufactured in the same manner as the sole-type shock absorber for shoes in accordance with the first embodiment except that, differing from the bonding of the elastic plate member 310 to the inner surfaces of the upper and lower pads 210 and 220, elastic rings 350, which are made of polyurethane elastic bodies and have a hardness of 90 Shore/A (after 24 hours), are interposed between the upper pad 210 and the lower pad 220 such that the elastic body fixing protrusions 212 and 222 of the upper and lower pads 210 and 220 are inserted into the corresponding elastic rings 350.
  • a heel-type shock absorber for shoes in accordance with a third embodiment is manufactured in the same manner as the sole-type shock absorber for shoes in accordance with the first embodiment except that a heel-type upper pad 10 and a heel-type lower pad 20 are prepared instead of the sole-type upper pad 210 and the sole-type lower pad 220.
  • a heel-type shock absorber for shoes in accordance with a fourth embodiment is manufactured in the same manner as the sole-type shock absorber for shoes in accordance with the second embodiment except that a heel-type upper pad 10 and a heel-type lower pad 20 are prepared instead of the sole-type upper pad 210 and the sole-type lower pad 220.
  • the shock absorber for shoes of the present invention does not comprise anti-extension wires installed in separate coil springs to prevent the upper pad 10 or 210 and the lower pad 20 or 220 from being expanded, and comprises the high frequency heat sealing support rods 14 or 214 between coil springs 30 or 230.
  • the high frequency heat sealing support rods 14 or 214 By fixedly attaching the high frequency heat sealing support rods 14 or 214 to the upper pad 10 or 210 and the lower pad 20 or 220, it is possible to prevent the coil springs 30 or 230 from being separated from the upper pad 10 or 210 and the lower pad 20 or 220 and to prevent the coil springs 30 or 230 from being extended more than the displacement (y) of the coil springs 30 or 230 so as to limit the extension of the coil springs 30 or 230 when the coil springs 30 or 230 are extended.
  • the air injection hole 50 or 250 for injecting air into the external air cover 40 or 240 is formed through the high frequency sealing plane 16 or 216 or the side surface 18 or 218 of the upper pad 10 or 210.
  • the air injection hole 50 or 250 is formed at a side of a shoe opposite to a heel of the shoe employing the shock absorber so that the air injection hole 50 or 250 is not visible at the heel.
  • nitrogen gas, helium gas, or air is used to fill the inside of the external air cover 40 or 240 of the shock absorber for shoes of the present invention. Most preferably, nitrogen is used in consideration of its safety.
  • the coil springs 30 or 230 have rectangular or trapezoid cross sections, and rises 12-1, 22-1, 212- 1, or 222-1, to which the coil springs 30 or 230 are fixed, are formed on the elastic body fixing protrusions 12, 22, 212, or 222.
  • Tapered angles 12-2, 22-2, 212-2, and 222-2 are formed from the upper ends of the rises 12-1, 22-1, 212-1, or 222-1 to the upper ends of the elastic body fixing protrusions 12, 22, 212, or 222 in the upward direction from the lower portion of the elastic body fixing protrusions 12, 22, 212, or 222, and are in the range of 30 ° to 85 ° so that it is possible to prevent the coil springs 30 or 230 from being distorted or damaged by external force.
  • the elastic body fixing protrusions 12, 22, 212, or 222 are configured such that the total sum of the height (hi) of the upper elastic body fixing protrusions 12 or 212 and the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222 is more than the height (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed and is smaller than the displacement (y) of the coil springs 30 or 230 when the coil springs 30 or 230 are extended.
  • the elastic body fixing protrusions 12, 22, 212, or 222 are configured such that the total sum of the height (hi) of the upper elastic body fixing protrusions 12 or 212 and the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222 is more than the height (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed and is smaller than 75% of the displacement (y) of the coil springs 30 or 230 when the coil springs 30 or 230 are extended.
  • the displacement (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed is 50% of the displacement (y) of the coil springs 30 or 230 when the coil springs 30 or 230 are extended
  • the upper pad 10 or 210 and the lower pad 20 or 220 are made of a polyurethane polymer or a polyurethane elastic body having a hardness of 50 ⁇ 100 Shore/A (after 24 hours), and are preferably made of a polyurethane polymer or a polyurethane elastic body having a hardness of 75 ⁇ 90 Shore/A (after 24 hours).
  • a shoe employing the shock absorber of the present invention comprises an outsole 101 forming the sole of the shoe, a mid sole 103 attached to the upper surface of the outsole 101, an insole 107 attached to the upper surface of the mid sole 103, an upper sole 105 attached to the upper surface of the mid sole 103 for surrounding the upper surface of the mid sole 103 to form a space for receiving a user's foot, and the shock absorber installed on the mid sole 103 in parallel.
  • the rises 12-1, 22-1, 212-1, or 222-1, to which the coil springs 30 or 230 are fixed, are formed on the elastic body fixing protrusions 12, 22, 212, or 222.
  • the tapered angles 12-2, 22-2, 212-2, and 222-2 are formed from the upper ends of the rises 12-1, 22-1, 212-1, or 222-1 to the upper ends of the elastic body fixing protrusions 12, 22, 212, or 222 in the upward direction from the lower portion of the elastic body fixing protrusions 12, 22, 212, or 222.
  • the tapered angles 12-2, 22-2, 212-2, and 222-2 are in the range of 30 ° to 85 ° .
  • the height (hi) of the upper elastic body fixing protrusions 12 or 212 may be the same as the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222. Alternately, the height (hi) of the upper elastic body fixing protrusions 12 or 212 may differ from the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222.
  • the elastic body fixing protrusions 12, 22, 212, or 222 are configured such that the total sum of the height (hi) of the upper elastic body fixing protrusions 12 or 212 and the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222 is more than the height (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed and is smaller than the displacement (y) of the coil springs 30 or 230 when the coil springs 30 or 230 are extended.
  • the elastic body fixing protrusions 12, 22, 212, or 222 are configured such that the total sum of the height (hi) of the upper elastic body fixing protrusions 12 or 212 and the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222 is more than the height (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed and is smaller than 75% of the displacement (y) of the coil springs 30 or 230 when the coil springs 30 or 230 are extended.
  • two to four pairs of the elastic body fixing protrusions 12, 22, 212, or 222 are arranged in a line.
  • the coil springs 30 or 230 have rectangular or trapezoid cross sections, and the displacement (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed is 50% of the displacement (y) of the coil springs 30 or 230 when the coil springs 30 or 230 are extended.
  • the coil springs 30 or 230 have trapezoid cross sections, when force is applied from the upside to the upper portion of the shoe employing the shock absorber of the present invention, the coil springs 30 or 230 are compressed. At this time, the coil springs 30 or 230 have a poor strength, thus having low elasticity.
  • the coil springs 30 or 230 excellent shock- absorbing effects.
  • the coil springs 30 or 230 are dacro-coated, and are coated with a luminous or fluorescent material.
  • the shock absorber of the present invention is employed by all shoes required to absorb shock. That is, the shoes employing the shock absorber of the present invention include sports shoes, mountain-climbing shoes, golf shoes, industrial safety shoes, and indoor shoes.
  • the sports shoes include all sports shoes, such as running shoes, basketball shoes, soccer shoes, and tennis shoes, in which shock of a considerable degree is exerted upon both feet of a sportsman wearing the sports shoes during exercise.
  • the mountain-climbing shoes include all shoes, which are worn by mountain climbers, and, in which shock is exerted upon both feet of a mountain climber wearing the shoes during extended mountain-climbing for a long time.
  • the golf shoes include all shoes, which are worn by golfers, and, in which shock is exerted upon one foot of a golfer wearing the shoes during playing golf.
  • the industrial safety shoes include shoes, which are worn by workers, and, in which shock is exerted upon both feet of a worker wearing the shoes due to the weight of an object lifted by the worker as well as the weight of the worker during working in an industrial setting.
  • the shoes employing the shock absorber of the present invention may include all shoes, which are worn by middle-age women having weak ankles or knees, elderly persons, and persons suffering from arthritis.
  • a sport shoe employing the shock absorber of the present invention comprises the outsole 101 forming the sole of the shoe, a mid sole 103 attached to the upper surface of the outsole 101, the upper sole 105 attached to the upper surface of the mid sole 103 for surrounding the upper surface of the mid sole 103 to form a space for receiving a user's foot, and the shock absorber 100 installed on the mid sole 103 in parallel.
  • An insole 107 is attached to the upper surface of the mid sole 103 in the sport shoe, thereby contacting an exercising person.
  • At least one shock absorber 100 of the present invention is installed on the mid sole 103 of the heel of the sports shoe.
  • at least one shock absorber 100 of the present invention is installed on the mid sole 103 of the sole of the sports shoe.
  • the shock absorber 100 of the present invention comprises the upper pad 10, the lower pad 20 disposed below the upper pad 10 and separated from the upper pad 10 by a designated interval in parallel with the upper pad 10 such that the lower pad 20 is arranged symmetrically with the upper pad 10, a plurality of the elastic body fixing protrusions 12 and 22 fixed to the inner surfaces of the upper and lower pads 10 and 20 corresponding to each other, and a plurality of the coil springs 30 interposed between the upper pad 10 and the lower pad 20 under the condition that the coil springs 30 are fixed to the elastic body fixing protrusions 12 and 22 for absorbing shock, thereby allowing shock transmitted from the sole of the shoe to a user's foot to be absorbed by the coil springs 30.
  • a plurality of the upper elastic body fixing protrusions 12 are formed on the inner surface of the upper pad 10, and a plurality of the lower elastic body fixing protrusions 22 are formed on the inner surface of the lower pad 20.
  • the springs are distorted or generates noise due to the distortion of the springs.
  • the rises 12-1 and 22-1 are formed on the lower ends of the upper and lower elastic body fixing protrusions 12 and 22, thereby preventing the coil springs 30 from being distorted or damaged when the coil springs 30 are contracted and extended, and preventing noise generated from the coil springs 30.
  • the elastic body fixing protrusions 12 and 22 have tapered shape, thereby preventing noise generated from the coil springs 30 and preventing the coil springs 30 from being distorted or damaged.
  • the tapered angles 12-2 and 22-2 are formed from the upper ends of the rises 12-1 and 22-1 to the upper ends of the elastic body fixing protrusions 12 and 22 in the upward direction from the lower portion of the elastic body fixing protrusions 12 and 22.
  • the tapered angles 12-2 and 22-2 is in the range of 30 ° to 85 ° .
  • the tapered angles 12-2 and 22-2 of the elastic body fixing protrusions 12 and 22 are more than 85 ° , the tapered angles 12-2 and 22-2 are not formed on the elastic body fixing protrusions 12 and 22 and the coil springs 30, which are made of metal, generate noise or collide with each other, hi the case that the angle of the tapered angles 12-2 and 22-2 of the elastic body fixing protrusions 12 and 22 is less than 30 ° , the rises 12-1 and 22-1 cannot be formed on the elastic body fixing protrusions 12 and 22, and the springs 30, which are made of the metal, cannot be fixed to the rises 12-1 and 22-1, thereby generating noise or colliding with each other.
  • the height (Ti 1 ) of the upper elastic body fixing protrusions 12 or 212 may be the same as the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222. Alternately, the height (hi) of the upper elastic body fixing protrusions 12 or 212 may differ from the height (Ti 2 ) of the lower elastic body fixing protrusions 22 or 222.
  • the elastic body fixing protrusions 12, 22, 212, or 222 are configured such that the total sum of the height (Ji 1 ) of the upper elastic body fixing protrusions 12 or 212 and the height (Ti 2 ) of the lower elastic body fixing protrusions 22 or 222 is more than the height (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed, hi the case that the height (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed is 8mm, the total sum of the height Qn) of the upper elastic body fixing protrusions 12 or 212 and the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222 must be more than 8 mm so that the upper elastic body fixing protrusions 12 or 212 and the lower elastic body fixing protrusions 22 or 222 serve as fixing rods for protecting the springs 30 or 230.
  • the height (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed is 8im and the total sum of the height (Ti 1 ) of the upper elastic body fixing protrusions 12 or 212 and the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222 is more than 8mm, the height (h ⁇ of the upper elastic body fixing protrusions 12 or 212 and the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222 are respectively 4mm.
  • the upper elastic body fixing protrusions 12 or 212 and the lower elastic body fixing protrusions 22 or 222 serve as fixing rods for protecting the springs 30 or 230, thereby preventing the coil springs 30 or 230 from being damaged or being separated from the upper elastic body fixing protrusions 12 or 212 and the lower elastic body fixing protrusions 22 or 222 even when strong shock is applied to the sole of the shoe.
  • the total sum of the height (Ia 1 ) of the upper elastic body fixing protrusions 12 or 212 formed on the upper pad 10 or 210 and the height (h 2 ) of the lower elastic body fixing protrusions 22 or 222 formed on the lower pad 20 or 220 is smaller than the height (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed, the coil springs 30 or 230 rub against the upper pad 10 or 210 and the lower pad 20 and 220, thus serving as fixing rods.
  • the coil springs 30 or 230 absorb sweat or moisture through the damaged upper pad 10 or 210 and the damaged lower pad 20 or 220, and are rusted.
  • the coil springs 30 or 230 are damaged.
  • the coil springs 30 or 230 have rectangular cross sections, and in order to maximally absorb shock applied to the sole of the shoe, the displacement (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed is 50% of the displacement (y) of the coil springs 30 or 230 when the coil springs 30 or 230 are extended.
  • the displacement (y) of the coil springs 30 or 230 when the coil springs 30 or 230 are extended is 16mm.
  • the displacement (x) of the coil springs 30 or 230 when the coil springs 30 or 230 are maximally compressed is 8m!.
  • the coil springs 30 or 230 are dacro-coated. Further, preferably, in order to prevent the coil springs 30 or 230 from being extended even when strong shock is applied to the coil springs 30 or 230 and to prevent the upper pad 10 or 210 and the lower pad 20 or 220 from being swollen due to the extending of the coil springs 30 or 230, the coil springs 30 or 230 are dacro- coated. Preferably, in order to prevent the coil springs 30 or 230 from rusting and to allow the shock absorber to be easily seen from the outside, the coil springs 30 or 230 are coated with a luminous or fluorescent material.
  • the upper pad 10 or 210 and the lower pad 20 or 220 are generally made of polymer resin.
  • the upper pad 10 or 210 and the lower pad 20 or 220 are manufactured by injection-molding a polyurethane polymer or polyurethane elastic body.
  • the upper pad 10 or 210 and the lower pad 20 or 220 are manufactured by injection-molding a polyurethane polymer having a hardness of 75 ⁇ 90 Shore/A (after 24 hours).
  • the coil springs 30 or 230 which are made of metal, generate noise due to the coil springs 30 or 230 themselves or collides with each other, thereby providing unpleasantness and uneasy to a person wearing the shoe employing the shock absorber of the present invention.
  • the upper pad 10 or 210 and the lower pad 20 or 220 are manufactured by injection-molding a polyurethane polymer or elastic body having a hardness of less than 75 Shore/A (after 24 hours), the upper pad 10 or 210 and the lower pad 20 or 220 have a weak hardness and the coil springs 30 or 230, which are made of metal, generate noise due to the coil springs 30 or 230 themselves or collide with each other.
  • the external air cover 40 or 240 forms an air chamber filled with air, thereby first alleviating shock applied from the outside to the upper pad 10 or 210 and the lower pad 20 or 220.
  • the shock applied from the outside to the upper pad 10 or 210 and the lower pad 20 or 220 is alleviated by elasticity of the coil springs 30 or 230.
  • the shoe When a shoe employing the shock absorber for shoes of the present invention is manufactured, in the case that the external air cover 40 or 240 is not installed in the shock absorber, the shoe must be manufactured by a high frequency heat sealing method or a bonding method and a mid sole of the shoe cannot be obtained by a phylon injection method.
  • the external air cover 40 or 240 is not installed in the shock absorber, when the shock absorber for shoes of the present invention is inserted into upper and lower injection molds and the injection of phylon is performed, phylon is inserted into the shock absorber.
  • a shoe employing the shock absorber is not manufactured by the high frequency heat sealing method or the bonding method and a mid sole of the shoe is manufactured by the phylon injection method
  • a shoe employing the shock absorber is manufactured by the phylon injection method under the condition that the shock absorber is injected into upper and lower injection molds.
  • a shock absorber for shoes in accordance with the present invention comprises an air cover and high frequency heat sealing support rods, which are simultaneously formed by a high frequency heat sealing method during the connection of an upper pad and a lower pad so that the air cover is formed by the side surface of the upper pad without a separate step of forming the air cover by surrounding edges of the upper and lower pads with a synthetic resin and a step of installing anti-extension wires in coil springs, thereby shortening a time taken to perform a manufacturing process, reducing production costs, and preventing tearing of the air cover and leakage of air through the torn air cover.
  • a shoe employing the shock absorber is manufactured by a phylon injection method under the condition that the shock absorber is injected into upper and lower injection molds in the case that a mid sole of the shoe is manufactured by the phylon injection method
  • the method of the present invention shortens a time taken to perform a shoes manufacturing process, reduces shoes production costs, and increases the probability of shoes mass production.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

L'invention concerne un amortisseur de chocs pour chaussures, à l'intérieur duquel sont installés des ressorts. Cet amortisseur de chocs comprend un tampon supérieur (10, 210) et un tampon inférieur (20, 220) disposés de manière symétrique ; et un revêtement extérieur (40, 240) de chambre d'air qui entoure les bords des tampons supérieur et inférieur (10, 210 et 20, 220) et qui permet de former une chambre d'air dont l'intérieur est rempli d'air, ladite chambre étant obtenue par collage d'une surface de thermoscellage (16, 216) du tampon supérieur (10, 210) au moyen d'un procédé de thermoscellage haute fréquence de sorte que la surface de thermoscellage haute fréquence (16, 216) du tampon supérieur (10, 210) entre en contact avec le tampon inférieur (20, 220).
PCT/KR2005/003276 2004-10-07 2005-10-05 Amortisseur de chocs pour chaussures WO2006038782A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2004-0079906 2004-10-07
KR1020040079906A KR100464521B1 (ko) 2004-10-07 2004-10-07 충격완화 기능성 웰빙 신발용 완충장치
KR10-2005-0001042 2005-01-06
KR1020050001042A KR20060080660A (ko) 2005-01-06 2005-01-06 충격완화 기능성 웰빙 신발용 완충장치

Publications (1)

Publication Number Publication Date
WO2006038782A1 true WO2006038782A1 (fr) 2006-04-13

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ID=36142829

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2005/003276 WO2006038782A1 (fr) 2004-10-07 2005-10-05 Amortisseur de chocs pour chaussures

Country Status (1)

Country Link
WO (1) WO2006038782A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITAN20130207A1 (it) * 2013-11-08 2015-05-09 Tecne 90 S P A Suola di elevata flessibilità per calzature e relativo metodo di produzione

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5979078A (en) * 1994-12-02 1999-11-09 Nike, Inc. Cushioning device for a footwear sole and method for making the same
KR200176002Y1 (ko) * 1999-10-20 2000-03-15 이동락 충격흡수용 신발
JP3094386B2 (ja) * 1992-12-26 2000-10-03 株式会社ジェルテック 緩衝パッド
US20020073579A1 (en) * 1999-04-29 2002-06-20 Lombardino Thomas D. Article of footwear incorporating a shock absorption and energy return assembly for shoes
KR20020050216A (ko) * 2002-03-18 2002-06-26 윤영현 신발용 피스톤 기능 시스템

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3094386B2 (ja) * 1992-12-26 2000-10-03 株式会社ジェルテック 緩衝パッド
US5979078A (en) * 1994-12-02 1999-11-09 Nike, Inc. Cushioning device for a footwear sole and method for making the same
US20020073579A1 (en) * 1999-04-29 2002-06-20 Lombardino Thomas D. Article of footwear incorporating a shock absorption and energy return assembly for shoes
KR200176002Y1 (ko) * 1999-10-20 2000-03-15 이동락 충격흡수용 신발
KR20020050216A (ko) * 2002-03-18 2002-06-26 윤영현 신발용 피스톤 기능 시스템

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITAN20130207A1 (it) * 2013-11-08 2015-05-09 Tecne 90 S P A Suola di elevata flessibilità per calzature e relativo metodo di produzione

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