US20140283416A1 - Heel fixing structure for women's shoe - Google Patents

Heel fixing structure for women's shoe Download PDF

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Publication number
US20140283416A1
US20140283416A1 US14/351,514 US201214351514A US2014283416A1 US 20140283416 A1 US20140283416 A1 US 20140283416A1 US 201214351514 A US201214351514 A US 201214351514A US 2014283416 A1 US2014283416 A1 US 2014283416A1
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US
United States
Prior art keywords
heel
insole
fixing structure
fastening bolt
woman
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US14/351,514
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English (en)
Inventor
Toyoji Yamada
Tatsuo Izumizaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Izumi Industry Co Ltd
Original Assignee
Izumi Industry 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
Application filed by Izumi Industry Co Ltd filed Critical Izumi Industry Co Ltd
Assigned to IZUMI INDUSTRY CO., LTD. reassignment IZUMI INDUSTRY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IZUMIZAKI, TATSUO, YAMADA, TOYOJI
Publication of US20140283416A1 publication Critical patent/US20140283416A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/02—Heels; Top-pieces or top-lifts characterised by the material
    • A43B21/025—Metal
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
    • A43B21/38—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means by screws only
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
    • A43B21/46—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means by bolts

Definitions

  • the present invention relates to a heel fixing structure for fastening a heel to a woman's shoe such as a high-heeled shoe.
  • a separate synthetic-resin heel 3 is fastened to an insole 2 of a shoe body 1 with nails 4 .
  • a metal pipe 5 is embedded in the heel 3 to prevent breakage of the slender heel 3 during the use.
  • the metal pipe 5 includes a heel-tip accessory 6 made of a material such as rubber at the bottom-end thereof.
  • a large nail 4 a such as a helical nail is driven along the central axis of the heel 3 from the top surface of the insole 2 for rigidly fastening the heel 3 to the insole 2 .
  • short thin nails 4 b are driven around the large nail 4 a to reinforce the large nail 4 a and prevent rotation of the heel 3 .
  • the insole 2 generally consists of multiple layers and a narrow metal shank lying between two central layers for the reinforcement and resiliency of the insole 2 .
  • the large nail 4 a and the thin nails 4 b thus must be driven substantially along the central axis of the heel 3 so as to avoid the contact with the shank in the insole 2 and the metal pipe 5 inside the heel 3 . This requires highly accurate positioning of the nails.
  • Patent Literatures 1 and 2 disclose techniques of fastening a heel to an insole without nails. These techniques enable fastening of a heel without driving nails and therefore can reduce the number of defective shoes.
  • a self-tapping screw 7 is forcedly screwed into a metal pipe 8 inside the heel 3 while tapping the inner surface of the metal pipe 8 to fasten the heel 3 to the insole 2 , as illustrated in FIG. 12 .
  • Patent Literatures 1 and 2 ensure fastening of the heel 3 to the insole 2 with the self-tapping screw 7 .
  • a pin heel 3 having an edge with a diameter of 10 mm or smaller, for example, can accept only a thin metal pipe 8 .
  • a thin self-tapping screw 7 fittable within such a thin metal pipe 8 cannot provide sufficient fastening strength.
  • screwing of the self-tapping screw 7 into the metal pipe 8 which involves tapping or threading of the metal pipe 8 , cannot be readily achieved by manual operation and requires mechanical devices for tapping and threading. Additionally, during the tapping, the metal pipe 8 may cause relative rotation or detachment to/from the heel 3 .
  • An object of the present invention which has been accomplished to solve the above problems, is to provide a heel fixing structure for a woman's shoe that enables easy and rigid fastening of a heel to an insole.
  • a heel fixing structure to an insole for a woman's shoe according to the present invention includes:
  • a metal reinforcing shaft including a thin lower portion and a thick upper portion having a larger external diameter than the external diameter of the thin portion, the thick portion including a first thread groove on the inner surface, the reinforcing shaft being embedded in the heel in the longitudinal direction of the heel;
  • the heel fixing structure for a woman's shoe according to the present invention can achieve simple, rigid, and secure fastening by screwing of a thick fastening bolt. This structure can therefore significantly reduce the number of defective shoes due to failure of nailing, and is applicable to a pin-heel shoe.
  • FIG. 1 is a cross-sectional view of a heel in the completed state according to Embodiment 1;
  • FIG. 2 is a perspective view of a reinforcing shaft
  • FIG. 3 is a cross-sectional view of a heel embedded with a reinforcing shaft
  • FIG. 4 is a perspective view of a reinforcing shaft according to a modified embodiment
  • FIG. 5 is a side view of a fastening bolt according to a modified embodiment
  • FIG. 6 is a cross-sectional view of a heel fastened with a fastening bolt according to a modified embodiment
  • FIG. 7 is a cross-sectional view of a heel according to Embodiment 2.
  • FIG. 8 is a cross-sectional view of a heel according to Embodiment 3.
  • FIG. 9 is a cross-sectional view of a heel according to modified Embodiment 3.
  • FIG. 10 is a cross-sectional view of a heel having a conventional heel fixing structure
  • FIG. 11 is a cross-sectional view of a defective heel having a conventional heel fixing structure.
  • FIG. 12 is a cross-sectional view of a heel having another conventional heel fixing structure.
  • FIG. 1 is a cross-sectional view of a heel of a completed woman's high-heeled shoe according to Embodiment 1.
  • a synthetic-resin heel 13 is in contact with the bottom of an insole 12 made of a material such as leather in a shoe body 11 .
  • a reinforcing shaft 14 is embedded in the heel 13 by injection molding, and a fastening bolt 15 having a head 15 a is screwed via a washer 16 into the reinforcing shaft 14 such that the heel 13 is firmly fastened to the insole 12 .
  • the insole 12 is firm enough to hold the heel 13 and includes multiple layers composed of various materials.
  • a narrow metal shank 12 c is sandwiched between a lower layer 12 a and an upper layer 12 b. The shank 12 c serves to reinforce the insole 12 , keep the shape and provide resiliency of the insole 12 .
  • a sock liner 17 and a bottom sole 18 are respectively attached to the upper and lower surfaces of the insole 12
  • FIG. 2 is a perspective view of the reinforcing shaft 14 .
  • the metal reinforcing shaft 14 includes a cylindrical thin lower portion 14 a and a thick upper portion 14 b having the external diameter larger than that of the thin portion 14 a such that the top-end of the thin portion 14 a fits within the thick portion 14 b.
  • the thin portion 14 a has a 5-mm external diameter, 3-mm internal diameter, and 50-mm length; while the thick portion 14 b has a 10-mm external diameter, 5-mm internal diameter, and 25-mm length.
  • the thin portion 14 a is integratedly welded to the thick portion 14 b.
  • the thick portion 14 b includes a thread groove 14 c on the inner surface to receive the fastening bolt 15 , and optional protrusions 14 d on the outer surface.
  • the reinforcing shaft 14 is embedded in the heel 13 such that the thin portion 14 a which extends along the heel 13 in the longitudinal direction of the heel 13 does not appear from the bottom of the heel 13 and such that the thick portion 14 b does not protrude from the top of the heel 13 .
  • the insole 12 includes an opening 12 d to receive the fastening bolt 15 and a taper 12 e is provided around the opening 12 d.
  • the shank 12 c in the insole 12 has an opening or a slit in communication with the opening 12 d to receive the fastening bolt 15 .
  • the heel 13 is temporarily fixed to the insole 12 by means such as adhesion before screwing of the fastening bolt 15 into the reinforcing shaft 14 .
  • the fastening bolt 15 is screwed through the washer 16 and the opening 12 d of the insole 12 into the thread groove 14 c with a cross-slot screwdriver applied to the cross slot on the head 15 a of the fastening bolt 15 such that the heel 13 is fixed to the insole 12 with the head 15 a and the washer 16 .
  • the washer 16 engaging with a part of the shank 12 c via the upper layer 12 b further reinforces the fastening.
  • one or several optional thin nails 19 may be driven around the fastening bolt 15 so as to avoid the shank 12 c. This prevents accidental relative rotation of the heel 13 to the insole 12 during the use.
  • the protrusions 14 d prevent relative rotation and detachment of the reinforcing shaft 14 to/from the heel 13 during screwing of the fastening bolt 15 into the thick portion 14 b.
  • the bottom-end of the thin portion 14 a is provided with a heel-tip accessory 20 made of a material such as rubber and having a convex 20 a fittable within the thin portion 14 a.
  • the fastening bolt 15 which completely functions a substitute for a conventional large nail 4 a and a small number of thin nails 19 , can significantly reduce the number of defective shoes caused by failure of nailing.
  • the reinforcing shaft 14 includes the thin portion 14 a with a small external diameter and the thick portion 14 b with a large external diameter thereabove. This enables, even in a pin-heel shoe, embedding of the reinforcing shaft 14 in the heel 13 , and screwing of the thick fastening bolt 15 into the thick portion 14 b, thereby achieving rigid fastening.
  • the thickness difference in the reinforcing shaft 14 between the thin portion 14 a and the thick portion 14 b prevents downward shift of the reinforcing shaft 14 in the heel 13 caused by a load from the above during screwing of the fastening bolt 15 or during the use of the shoe.
  • the reinforcing shaft 14 according to Embodiment 1 includes the thin portion 14 a and the thick portion 14 b that are welded together, the thin portion 14 a having an upper-external thread ridge may be screwed into the thread groove 14 c of the thick portion 14 b. Alternatively, the thin portion 14 a may be connected to the thick portion 14 b by swaging or adhesion, for example.
  • the reinforcing shaft 14 may have tapered thick portion 14 b connected to the thin portion 14 a as illustrated in FIG. 4( a ), or may be an integrated member having an entirely tapered shape as illustrated in FIG. 4( b ).
  • the cross sections of the thin portion 14 a and the thick portion 14 b are not limited to a circle, and may be a polygon or an ellipse, for example.
  • the thick portion 14 b having a polygonal shape prevents relative rotation to the heel 13 during screwing of the fastening bolt 15 .
  • the thin portion 14 a is not limited to a pipe and may be a solid shaft with a hole provided at the bottom-end for receiving the heel-tip accessory 20 .
  • any countermeasure is required to prevent scratch on the user's sole by the head 15 a of the screwed fastening bolt 15 which is not parallel with the top surface of the insole 12 .
  • One solution to the problem is to provide a fastening bolt 15 ′ with an inclined head 15 a illustrated in FIG. 5 , the fastening bolt 15 ′ being fastened such that the top surface of the head 15 a is parallel with the top surface of the insole 12 as illustrated in FIG. 6 .
  • the reinforcing shaft 14 is embedded in the heel 13 by the injection molding of the heel 13 .
  • a reinforcing shaft 22 including a thin portion 22 a connected to a thick portion 22 b is driven into a hole 21 a of a heel 21 , as illustrated in FIG. 7 .
  • the hole 21 a has substantially the same shape as that of the reinforcing shaft 22 .
  • the thick portion 22 b may have anti-rotational means such as blades disposed on its outer surface in the longitudinal direction to prevent the rotation of the reinforcing shaft 22 during the screwing of the fastening bolt 15 .
  • the reinforcing shaft 22 may have a shape as illustrated in FIG. 4 .
  • the heel 21 including the reinforcing shaft 22 driven into the heel 21 is attached to the insole 12 , and then the fastening bolt 15 or 15 ′ is screwed into a thread groove 22 c of the thick portion 22 b in the same manner as Embodiment 1. This enables rigid fastening of the heel 21 to the insole 12 .
  • Embodiment 2 is especially effective for the heel 21 made of wood.
  • FIG. 8 is a cross-sectional view for Embodiment 3.
  • the fastening bolt 15 ′ in modified Embodiment 1 is used, so that the head 15 a is parallel with the top surface of the insole 12 .
  • a metal reinforcing shaft 31 according to Embodiment 3 formed through a technique such as casting to be embedded in the synthetic-resin heel 13 has the fastening bolt 15 and a thin portion 31 a which are attached to the reinforcing shaft 31 in different directions in a thick portion 31 b.
  • the thick portion 31 b which is connected to the thin portion 31 a to form the reinforcing shaft 31 , includes a thread groove 31 c for receiving the fastening bolt 15 such that the top surface of the head 15 a is parallel with the top surface of the insole 12 , and a thread groove 31 d for receiving the thin portion 31 a such that the thin portion 31 a extends along the heel 13 in the longitudinal direction of the heel 13 .
  • the thin portion 31 a may be connected to the thick portion 31 b by a technique such as welding or adhesion.
  • FIG. 9 illustrates modified Embodiment 3, in which the thick portion 31 b of the reinforcing shaft 31 includes a thread groove 31 e having a small diameter beside and parallel to the thread groove 31 c for receiving the fastening bolt 15 .
  • a small auxiliary bolt 32 is screwed into the thread groove 31 e to fasten the heel 13 to the insole 12 .
  • Such a structure having the two bolts 15 and 32 screwed into the reinforcing shaft 14 further reinforces the fastening of the insole 12 .
  • the present invention is applicable to not only high-heeled shoes but also middle-heeled shoes and low-heeled shoes.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US14/351,514 2011-10-31 2012-10-30 Heel fixing structure for women's shoe Abandoned US20140283416A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011238803A JP4892644B1 (ja) 2011-10-31 2011-10-31 婦人靴のヒール固定構造
JP2011-238803 2011-10-31
PCT/JP2012/078040 WO2013065684A1 (ja) 2011-10-31 2012-10-30 婦人靴のヒール固定構造

Publications (1)

Publication Number Publication Date
US20140283416A1 true US20140283416A1 (en) 2014-09-25

Family

ID=45907924

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/351,514 Abandoned US20140283416A1 (en) 2011-10-31 2012-10-30 Heel fixing structure for women's shoe

Country Status (6)

Country Link
US (1) US20140283416A1 (ja)
JP (1) JP4892644B1 (ja)
KR (1) KR20140089477A (ja)
CN (1) CN103826492B (ja)
TW (1) TW201328621A (ja)
WO (1) WO2013065684A1 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140208620A1 (en) * 2013-01-29 2014-07-31 Aashika DAMODAR Flat-to-Heel Convertible Outsole
LU93088B1 (fr) * 2016-05-30 2017-12-01 Global Secure Sa Chaussure comprenant un dispositif avec tube de stockage d'information ou d'objet
LU93087B1 (fr) * 2016-05-30 2017-12-01 Global Secure Sa Chaussure comprenant un dispositif de stockage d'information ou d'objet
FR3086143A1 (fr) * 2018-09-22 2020-03-27 Bettina Vermillon Talon de chaussure comprenant un systeme de fixation integre et procede de fixation
USD926449S1 (en) * 2019-07-09 2021-08-03 Bendicion, LLC Shoe
CN113679146A (zh) * 2021-07-15 2021-11-23 深圳美工源塑胶模具有限公司 一种高跟鞋后跟成型方法及带有该后跟的高跟鞋

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2883470B1 (en) * 2013-12-11 2016-04-06 Po-Yao Lee Structure of platform shoe
CN104665084B (zh) * 2015-01-30 2016-08-24 温州市蒙拉妮鞋业有限公司 一种具有支撑插件的高跟鞋子及其加工方法
US9936761B2 (en) * 2015-08-13 2018-04-10 Brad Alan Combination shoe that can be transformed into a shoe with different heel heights
CN112545107A (zh) * 2020-11-30 2021-03-26 浙江卓诗尼鞋业有限公司 用于高跟鞋的鞋跟连接装置

Citations (13)

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Publication number Priority date Publication date Assignee Title
US1559444A (en) * 1923-12-03 1925-10-27 Lars R Larson Heel reenforcement and support
US2050644A (en) * 1935-02-18 1936-08-11 Andrew J Book Heel securement
US2139885A (en) * 1938-07-15 1938-12-13 Gironimo Enrico De Removable heel
US2799098A (en) * 1956-12-10 1957-07-16 Joseph L Abramson Heel constructions
US2841892A (en) * 1956-10-29 1958-07-08 Giannone Anthony Joseph Shoe construction
US2888755A (en) * 1958-05-07 1959-06-02 Edgar O Bartolucci Shoe heel
US3216133A (en) * 1964-03-17 1965-11-09 Houle Joseph Rosairc Heel construction
US4198770A (en) * 1978-02-09 1980-04-22 Orea Fernando Device for fixing heels
US4805320A (en) * 1987-10-26 1989-02-21 Goldenberg Tzvika Y Shoe with exchangeable heel
US5524365A (en) * 1994-08-16 1996-06-11 Goldenberg; Tzvika Y. Shoe with exchangeable heel
US20080235991A1 (en) * 2007-03-28 2008-10-02 Jayne Visser Shoe with removable/interchangeable heel and related method
US20100139123A1 (en) * 2008-12-05 2010-06-10 Brad Alan Transformable shoe with a sole that changes angles to orient to different height heels that can be detached or attached
US8505218B2 (en) * 2011-09-12 2013-08-13 Barbara-Jay's, LLC Shoe having removable and interchangeable heel assemblies with kit

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JPH03113223U (ja) * 1990-03-06 1991-11-19
JPH0866204A (ja) * 1994-08-23 1996-03-12 Y Goldenberg Zbika 多目的婦人靴
US6023858A (en) * 1998-05-12 2000-02-15 Reflections Shoe Corp. Two-piece shoe bottom system
CN2461328Y (zh) * 2001-02-14 2001-11-28 吴茂盛 高跟鞋钉
CN2657432Y (zh) * 2003-10-22 2004-11-24 陈馨国 改进的鞋子结构
JP3113223U (ja) * 2005-06-01 2005-09-02 マルト工業株式会社 ねじ締め込み装置
CN201005158Y (zh) * 2007-04-06 2008-01-16 秦长发 一种高跟鞋鞋跟
JP2010048325A (ja) * 2008-08-21 2010-03-04 Akira Kaneko タッピングねじ及びこれを用いた靴

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1559444A (en) * 1923-12-03 1925-10-27 Lars R Larson Heel reenforcement and support
US2050644A (en) * 1935-02-18 1936-08-11 Andrew J Book Heel securement
US2139885A (en) * 1938-07-15 1938-12-13 Gironimo Enrico De Removable heel
US2841892A (en) * 1956-10-29 1958-07-08 Giannone Anthony Joseph Shoe construction
US2799098A (en) * 1956-12-10 1957-07-16 Joseph L Abramson Heel constructions
US2888755A (en) * 1958-05-07 1959-06-02 Edgar O Bartolucci Shoe heel
US3216133A (en) * 1964-03-17 1965-11-09 Houle Joseph Rosairc Heel construction
US4198770A (en) * 1978-02-09 1980-04-22 Orea Fernando Device for fixing heels
US4805320A (en) * 1987-10-26 1989-02-21 Goldenberg Tzvika Y Shoe with exchangeable heel
US5524365A (en) * 1994-08-16 1996-06-11 Goldenberg; Tzvika Y. Shoe with exchangeable heel
US20080235991A1 (en) * 2007-03-28 2008-10-02 Jayne Visser Shoe with removable/interchangeable heel and related method
US20100139123A1 (en) * 2008-12-05 2010-06-10 Brad Alan Transformable shoe with a sole that changes angles to orient to different height heels that can be detached or attached
US8505218B2 (en) * 2011-09-12 2013-08-13 Barbara-Jay's, LLC Shoe having removable and interchangeable heel assemblies with kit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140208620A1 (en) * 2013-01-29 2014-07-31 Aashika DAMODAR Flat-to-Heel Convertible Outsole
US9289025B2 (en) * 2013-01-29 2016-03-22 Aashika DAMODAR Flat-to-heel convertible outsole
LU93088B1 (fr) * 2016-05-30 2017-12-01 Global Secure Sa Chaussure comprenant un dispositif avec tube de stockage d'information ou d'objet
LU93087B1 (fr) * 2016-05-30 2017-12-01 Global Secure Sa Chaussure comprenant un dispositif de stockage d'information ou d'objet
WO2017207073A1 (fr) * 2016-05-30 2017-12-07 Global Secure Sa Chaussure comprenant un dispositif avec tube de stockage d'information ou d'objet
WO2017207074A1 (fr) * 2016-05-30 2017-12-07 Global Secure Sa Chaussure comprenant un dispositif de stockage d'information ou d'objet
US10952491B2 (en) 2016-05-30 2021-03-23 Global Secure Sa Footwear item comprising a device for storing information or an object
FR3086143A1 (fr) * 2018-09-22 2020-03-27 Bettina Vermillon Talon de chaussure comprenant un systeme de fixation integre et procede de fixation
USD926449S1 (en) * 2019-07-09 2021-08-03 Bendicion, LLC Shoe
CN113679146A (zh) * 2021-07-15 2021-11-23 深圳美工源塑胶模具有限公司 一种高跟鞋后跟成型方法及带有该后跟的高跟鞋

Also Published As

Publication number Publication date
CN103826492A (zh) 2014-05-28
TW201328621A (zh) 2013-07-16
WO2013065684A1 (ja) 2013-05-10
JP2013094353A (ja) 2013-05-20
JP4892644B1 (ja) 2012-03-07
CN103826492B (zh) 2016-01-20
KR20140089477A (ko) 2014-07-15

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AS Assignment

Owner name: IZUMI INDUSTRY CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YAMADA, TOYOJI;IZUMIZAKI, TATSUO;REEL/FRAME:032660/0253

Effective date: 20140204

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION