EP2976960B1 - Oeillet avec grand rebord et son procédé de fabrication - Google Patents

Oeillet avec grand rebord et son procédé de fabrication Download PDF

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Publication number
EP2976960B1
EP2976960B1 EP15177462.7A EP15177462A EP2976960B1 EP 2976960 B1 EP2976960 B1 EP 2976960B1 EP 15177462 A EP15177462 A EP 15177462A EP 2976960 B1 EP2976960 B1 EP 2976960B1
Authority
EP
European Patent Office
Prior art keywords
eyelet
edge
head crown
cylindrical portion
series
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.)
Active
Application number
EP15177462.7A
Other languages
German (de)
English (en)
Other versions
EP2976960A1 (fr
Inventor
Davide AMBROSETTI
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.)
Ambrosetti Srl
Original Assignee
Ambrosetti Srl
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 Ambrosetti Srl filed Critical Ambrosetti Srl
Publication of EP2976960A1 publication Critical patent/EP2976960A1/fr
Application granted granted Critical
Publication of EP2976960B1 publication Critical patent/EP2976960B1/fr
Active legal-status Critical Current
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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B13/00—Hook or eye fasteners
    • A44B13/0058—Eyelets or grommets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts

Definitions

  • the present invention relates to an eyelet with a high edge and to the method of manufacturing the same.
  • Eyelets see e.g. US 942988A or US 6 006406A are known for clothes, footwear or other supports of various material, for example leather or fabric, which include a cylindrical portion defining a through hole, and a circular head crown which extends orthogonally outwards with respect to said cylindrical portion.
  • Said circular crown normally has an outer edge, which is flat or slightly folded downwards and has a height which is less than or equal to 1 mm.
  • the fold serves for coupling with a holding washer for the connection to the support; however, the washer has a minimum thickness coming out of said fold, with an unpleasant appearance.
  • the capacity of the connection disadvantageously decreases.
  • Said known eyelet is obtained from a metal sheet having a thickness from 0.25 to 0.40 mm with an in-line process which comprises a series of drawing operations for obtaining a cylindrical cavity inferiorly closed, and a punch-die cutting operation on said bottom, thus forming a cylindrical portion defining a through hole.
  • a shaping of about 1 mm is carried out on the same line, followed by subsequent cutting and ejecting operations by means of punch-die cutting.
  • the action of the punch and die during the step of cutting generates a fold facing outwards, i.e. an edge which is oblique outwards and imposes a larger horizontal volume if the edge height (vertical, in the direction of the cylindrical portion) is to be increased.
  • a method for obtaining an eyelet consisting of a cylindrical portion with a circular head crown with a straight edge made in one piece, the height of which is equal to at least 1.8 mm, which provides a series of in-line processes from a metal sheet having a thickness from 0.25 to 0.40 mm, said series of in-line processes comprising in sequence:
  • a method for obtaining an eyelet 1 consisting of a cylindrical portion 2 with a circular head crown 3 having a straight edge 4 made in one piece includes a series of in-line processes from a metal sheet 20 having a thickness from 0.25 to 0.40 mm, and a further off-line process.
  • Said series of in-line processes comprises in sequence ( figure 2 ):
  • the edge 4 of said intermediate eyelet 9 with flat head crown 10 is folded 30 off-line by means of the combined action of a punch 11 and a die 12.
  • the eyelet 1 obtained by the method according to the invention has a straight edge 4, i.e. parallel to the cylindrical portion 2, having a height h of at least 1.8 mm.
  • the height of the edge depends on the dimension of punch 11 and die 12, in addition to the centering of the intermediate eyelet 9 with the flat head crown 10 on punch 11 ( figure 3 ).
  • An edge 4 folded upwards may be easily obtained by simply inverting punch 11 and die 12.
  • the eyelet 1 thus obtained advantageously grips better a connection portion 55 of a support 51, for example clothes or footwear, and has a compartment 41 defined by edge 4 and by the head crown 10 which is best adapted to be coupled with a closing washer 52, by concealing it completely in the case of downwards fold.
  • the cross-section of said compartment 41 has the geometrical shape of a circular crown delimited by the cylindrical portion 2 inside and by edge 4 outside.
  • compartment 41 simply corresponds to the space delimited by edge 4 at the head crown 10.
  • edge 4 reduces the wear of leather or fabric laces, which do not touch the support when easily sliding on the shiny metal material of eyelet 1 ( figure 9 ).
  • eyelet 1 is adapted to embed inserts 54 made of different material, the outer connection surface of edge 4 being larger.
  • insert 54 in the compartment 41 of an eyelet 1 folded upwards is blocked by the free end of edge 4 ( figure 10 ).
  • the blocked insert 54 remains visible, albeit contained, in compartment 41.
  • an eyelet with edge 4 according to the present invention is required, having a height which is greater than 1.8 mm. By reducing the thickness of insert 54, the breakage thereof in the blocking step may become a risk.
  • eyelet 1 can include a blocking washer 50 to be inserted into compartment 41 above support 51.
  • Said washer 50 is made of a plastic material and serves to increase the friction between eyelet 1 and support 51.
  • said edge 4 can have a serrated end 42 ( figure 11 ).

Landscapes

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

Claims (7)

  1. Procédé pour obtenir un oeillet (1) se composant d'une partie cylindrique (2) avec une couronne circulaire de tête (3) avec un bord droit (4) réalisée d'un seul tenant, dont la hauteur (h) est égale à au moins 1,8 mm, comprenant une série de traitements en ligne à partir d'une feuille métallique (20) ayant une épaisseur de 0,25 à 0,40 mm,
    ladite série de traitements en ligne comprenant en séquence :
    une première série d'opérations d'étirage (5) pour obtenir une cavité intermédiaire (6),
    une seconde série d'opérations d'étirage (7) sur ladite cavité intermédiaire (6) pour obtenir ladite partie cylindrique (2) fermée au-dessous par un fond (8),
    couper et extraire (21) le fond (8) de sorte que la partie cylindrique (2) définit un trou débouchant,
    couper et éjecter (25) un oeillet intermédiaire (9) avec une couronne de tête plate (10),
    caractérisé en ce qu'il comprend un autre traitement en ligne sur ledit oeillet intermédiaire (9) avec la couronne de tête plate (10), consistant à plier (30) le bord (4) de la couronne de tête plate (10) au moyen de l'action combinée d'un poinçon (11) et d'une matrice (12).
  2. Procédé selon la revendication 1, caractérisé en ce que lesdites opérations de pliage (30) peuvent avoir lieu vers le haut ou vers le bas.
  3. Oeillet (1) pour vêtements, chaussures ou autres supports en matériaux différents, par exemple en cuir ou en tissu, obtenu à partir d'une feuille métallique (20) ayant une épaisseur de 0,25 à 0,40 mm et se composant d'une partie cylindrique (2) avec une couronne circulaire de tête (3) réalisée d'un seul tenant, caractérisé en ce que ladite couronne circulaire de tête (3) a un bord droit (4) parallèle à ladite partie cylindrique (2), dont la hauteur (h) est égale à au moins 1,8 mm afin de former un compartiment (41).
  4. Oeillet (1) selon la revendication 3, caractérisé en ce que ledit compartiment (41) est adapté pour loger une partie de raccordement (55) d'un support (51) et une rondelle de fermeture (52) au-dessous de ladite partie de raccordement (55) du support (51).
  5. Oeillet (1) selon la revendication 4, caractérisé en ce que ledit compartiment (41) est adapté pour loger une rondelle de verrouillage (50) au-dessus de la partie de raccordement (55) du support (51).
  6. Oeillet (1) selon la revendication 3, caractérisé en ce que ledit compartiment (41) est adapté pour loger un insert (54).
  7. Oeillet (1) selon l'une quelconque des revendications 3 à 6, caractérisé en ce que ledit bord droit (4) a une extrémité dentelée.
EP15177462.7A 2014-07-24 2015-07-20 Oeillet avec grand rebord et son procédé de fabrication Active EP2976960B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20141348 2014-07-24

Publications (2)

Publication Number Publication Date
EP2976960A1 EP2976960A1 (fr) 2016-01-27
EP2976960B1 true EP2976960B1 (fr) 2017-03-01

Family

ID=51628363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15177462.7A Active EP2976960B1 (fr) 2014-07-24 2015-07-20 Oeillet avec grand rebord et son procédé de fabrication

Country Status (1)

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EP (1) EP2976960B1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US942988A (en) * 1909-05-10 1909-12-14 United Shoe Machinery Ab Method of making eyelets.
GB807155A (en) * 1954-09-25 1959-01-07 Tucker Eyelet Co George Improvements in or relating to eyelets
US6006406A (en) * 1999-02-09 1999-12-28 Qingdao Gyoha Plastics Co., Ltd. Polymeric grommet
JP4493210B2 (ja) * 2000-12-27 2010-06-30 ポップリベット・ファスナー株式会社 マット用固定具
FR2891719B1 (fr) * 2005-10-07 2010-04-23 Gmcc Finances Oeillet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2976960A1 (fr) 2016-01-27

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