EP0456606A1 - Dispositif pour passer un organe de préhension d'un fil dans le chas d'une aiguille à coudre et application de ce dispositif - Google Patents

Dispositif pour passer un organe de préhension d'un fil dans le chas d'une aiguille à coudre et application de ce dispositif Download PDF

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Publication number
EP0456606A1
EP0456606A1 EP91810328A EP91810328A EP0456606A1 EP 0456606 A1 EP0456606 A1 EP 0456606A1 EP 91810328 A EP91810328 A EP 91810328A EP 91810328 A EP91810328 A EP 91810328A EP 0456606 A1 EP0456606 A1 EP 0456606A1
Authority
EP
European Patent Office
Prior art keywords
mobile
needle
slide
eye
sewing machine
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.)
Withdrawn
Application number
EP91810328A
Other languages
German (de)
English (en)
French (fr)
Inventor
Antonio Jimenez
Yves Combepine
Patrice Deplante
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.)
Mefina SA
Original Assignee
Mefina SA
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 Mefina SA filed Critical Mefina SA
Publication of EP0456606A1 publication Critical patent/EP0456606A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B87/00—Needle- or looper- threading devices
    • D05B87/02—Needle- or looper- threading devices with mechanical means for moving thread through needle or looper eye

Definitions

  • the present invention relates to a device for passing a gripping member of a thread through the eye of a sewing needle fixed on a support member and an application of such a device.
  • the device according to the invention can be an integral part of a sewing machine, be it of the industrial type or for household use.
  • the device shown in the drawings is more particularly intended to allow threading of a thread through the eye of a sewing machine needle. It is understood, however, that the constituent bodies may, duly modified, be incorporated in a device of more general use, allowing for example to thread the thread into the eye of usual needles.
  • This device is entirely fixed on a tubular support 1 constituted, in this case, by the needle bar of a sewing machine, for straight and / or zig-zag sewing for example.
  • this needle bar carries a head 2 to which removably attaches a support member 3 for a needle 4.
  • the functional assembly encompassing these elements is the subject of a prior patent of the applicant (dde CH 3743 / 89-8) to which reference is made for more details.
  • a tubular element 5 Inside the support 1 is slidably mounted a tubular element 5 in which is disposed a rod 6, also sliding and connected by its upper end, to a spring 7 itself fixed at 8 to the support 1 (fig. 1A and 2A ).
  • the tubular element 5 has a longitudinal window 5A, opening in line with a groove 6A of the rod 6 and which is crossed by a pin 1A, integral with the lower portion of the head 2 and the support 1 and engaged, moreover, in this groove 6A.
  • the support 1, the tubular element 5 and the rod 6 pass entirely through the head 2: the first and the second of these elements therefore open below this head .
  • the device shown On its lower part, the device shown carries a housing 9 formed, on the one hand, by two shells 10 and 11, assembled by screws 12a and 12b (fig. 3 to 5) and which are made integral with the tubular element 5 thanks to a pin 12c engaged in a passage 10a of the shell 10 as well as in an opening 5b passing through the wall of this element and, on the other hand, through the bottom, 13a, of a belt 13, U-shaped , the utility of which will appear subsequently and which is made integral with the rod 6 by a screw 14a (FIGS. 2A to 2C).
  • This belt 13 is, moreover, attached to the shell 11 of the housing 9 by a spring 15 fixed in slightly stretched position, respectively to this shell, in 15a, and to the belt, in 15b.
  • this spring is such that the force required to move the belt 13 downwards, in the drawing, that is to say to separate this belt from the rest of the housing 9, for example to drive it from the visible position in FIG. 2A in that illustrated in FIG. 2C, is greater than that which is necessary to drive the rod 6, also downwards, in the drawing, against the action of the spring 7.
  • the shell 10 of the housing 9 is hollowed out by a through passage 16, of substantially rectangular section, extending perpendicular to the element 5 and forming a slide for a slide 17 to which is fixed, by a screw 18a, a plate 18b carrying a gripping hook 18.
  • This slide 17 has, mounted close to its left end, in the drawing, a pin 17a engaged in a closed profile slide 19 hollowed out in a vertical plate 20 fixed, by a screw 14b and in its zone 20a (fig. 3), on the part 13a of the belt 13 (fig. 2A).
  • the slide 19 is constituted by a groove forming a cam defining, for the pin 17a, a closed circuit in the form of a parallelogram, two sides of which, 19a and 19b, are substantially parallel to the longitudinal axis of the elements 1 , 5 and 6 already mentioned, the lower end of the side 19a being closer to the part 13a of the belt 13, in the drawing, than is the homologous end of the side 19b of the slide 19.
  • the width of that -It is slightly greater than the diameter of the pin 17a, which allows a certain axial clearance of the slider 17 whatever the portion of the slide 19 which is engaged with this pin.
  • the position of the slide 19 in the housing 9 is such that, as long as the spring 15 is in a state corresponding to that illustrated in FIGS. 2A and 2B, that is to say as long as the belt 13 and the two shells 10 and 11 are contiguous (fig. 1A and 1B, 2A and 2B), the pin 17a is located at the lower end of the side 19a of the slide 19 so that the slide 17 occupies the extreme left position in the drawing and that the hook 18 is set back relative to the needle 4.
  • the length of the slot 5A formed in the tubular element 5 is chosen such that, when the housing 9 is moved from its upper, rest position, corresponding to a support of this housing against the head 2, (fig. 1A and 2A) by lowering it against the action of the spring 7, in the manner already described, the stroke of the housing is interrupted by encountering the upper edge of the slot 5a with the pin 1A at a level such as the hook 18 fixed to the slide 17, is very exactly opposite the eye c of the needle 4 (fig. 1B and 2B), set back relative to the latter.
  • the slide 17 occupies its second limit position, extreme right, in which its curved, functionally active portion of the hook 18 is found to have already crossed the eye c of the needle (FIGS. 1C and 2C).
  • This pin 17a and the slider 17 will however be driven to the left in the drawing, to reach their first position, as soon as the pin comes into contact with the lower edge of the side 19c of the slide.
  • the length of the travel of the slide 17 between its two limit positions is substantially equal to the distance separating the longitudinal axes of the vertical sides 19a and 19b of the slide 19.
  • this slope is identical for each side 19c or 19d and the length of the vertical sides, 19a and 19b, of the slide 19 is also identical for the two sides, one could very well envisage, in variants, to make use of a slide 19 which would no longer be a parallelogram but a trapezoid, for example. In such a case, the displacement speeds of the slide 17 would be different depending on the direction of its movement.
  • the slide 19 could even be formed by a simple inclined slot, relative to the longitudinal axis of the needle bar, that the pin 17a would successively travel in one direction and in the other.
  • the belt 13 envelops part of the lower face and of the two lateral faces of the assembly of shells 10 and 11 that the housing 9 comprises.
  • a stirrup 22 formed by two lateral tabs 22a and 22b and a connecting bar 22c.
  • the legs 22a and 22b have a very open V-shaped profile.
  • This stirrup is disposed on the belt 13 substantially at the upper end of the slide 19 so that the bottom of the opening of the V of the legs 22a and 22b is located slightly below this end of the slide, substantially halfway up part 19b thereof.
  • the bottom of the opening of the V of the tabs 22a and 22b is substantially coplanar with the longitudinal axis of the sewing needle 3.
  • the device described makes it possible to easily introduce and extract a hook, such as the hook 18, "in” and “from” the eye of a sewing needle.
  • a hook such as the hook 18, "in” and “from” the eye of a sewing needle.
  • the presence, the position and the particular conformation of the stirrup 22 also make it possible to ensure that, during the axial displacement of the hook towards the eye, through it and then its return back, in the left limit position of the slide 17 (fig.
  • the hook 18 grasps any wire that would be placed in the stretched position on the legs 22a and 22b of the stirrup, more precisely in the opening of the V that each of these forms, and that it involves from right to left in the drawing to perform its threading in the eye c of the needle.
  • the thread f which it is desired to thread into the eye c of the needle is placed on the tabs 22a and 22b (fig. 6A) and in abutment, by the intermediate portion of its segment included between the tabs, against the member -support 3 (fig. 6B). As can be seen in FIGS. 1A, 6A and 6B, this segment of wire then extends to a level higher than that of the trajectory of the hook 18.
  • a pull is then directed downwards in the figure, simultaneously on the two strands of the wire extending on either side of the stirrup 22, so as to cause the sliding of the tubular element 5 at the inside the needle bar 1, against the action of the spring 7, and, simultaneously, a corresponding displacement of the rod 6 and therefore of the entire housing 9.
  • the displacement of the slide 17 from left to right, in the direction of the eye of the needle, begins as soon as the pin 17a engages with the inclined side 19d of the slide 19 and ends when this pin reaches the right end of this side 19d.
  • the slide 17 reaches its extreme left position when the pin 17a returns to its starting position (fig. 1D), that is to say as soon as this pin has finished its migration from right to left, in the drawing, in contact on the inclined side 19c of the slide 19.
  • the device described is therefore particularly simple and very reliable to operate. Therefore, it can be used very easily even by visually impaired people, for whom threading a thread through the eye of a needle constitutes an almost insurmountable difficulty or even by the disabled or the elderly affected by particularly intense tremors.
  • the housing 9 ′ of the device could be mounted on a separate tubular support 23 playing the same role as that of the needle bar 1 in the embodiment of FIGS. 1 to 10 and kinematically integral with the needle bar 1 ′.
  • the telescopic tubular elements 5 and 6 which are not visible in FIG. 13 are therefore mounted inside the tubular support 23 and the stop 1A is integral with this same tubular support 23.
  • the operation of the device is also at any point identical to that described in relation to FIGS. 1 to 10 to which reference may be made.
  • FIG. 14 illustrates an application of the variant of FIG. 13 to a sewing machine 24.
  • FIG. 12 represents the embodiment of the device illustrated in FIGS. 1 to 10 mounted on the needle bar 1 of a sewing machine 25.
  • the housing 9 we can see the housing 9 as well as the part of the stirrup 22 which protrudes to the right of this housing to receive the thread to be threaded into the eye of needle 4.
  • FIG. 11 It can be seen in this figure that the tubular support 1 is fixed to a handle 26, the rest of the device being shown as illustrated in FIG. 4 except that the belt 13 and the stirrup 22 are represented before the sliding of the tubular element 5 in the support 1 and of the housing 9 against the springs 7 and 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP91810328A 1990-05-03 1991-04-30 Dispositif pour passer un organe de préhension d'un fil dans le chas d'une aiguille à coudre et application de ce dispositif Withdrawn EP0456606A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1505/90 1990-05-03
CH1505/90A CH683849A5 (fr) 1990-05-03 1990-05-03 Dispositif pour passer un organe de préhension d'un fil dans le chas d'une aiguille à coudre et machine à coudre munie d'un tel dispositif.

Publications (1)

Publication Number Publication Date
EP0456606A1 true EP0456606A1 (fr) 1991-11-13

Family

ID=4212019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810328A Withdrawn EP0456606A1 (fr) 1990-05-03 1991-04-30 Dispositif pour passer un organe de préhension d'un fil dans le chas d'une aiguille à coudre et application de ce dispositif

Country Status (15)

Country Link
US (1) US5143005A (pt)
EP (1) EP0456606A1 (pt)
JP (1) JPH04227298A (pt)
CN (1) CN1024825C (pt)
AU (1) AU647115B2 (pt)
BG (1) BG60299B2 (pt)
BR (1) BR9101790A (pt)
CA (1) CA2041612A1 (pt)
CH (1) CH683849A5 (pt)
CS (1) CS124791A3 (pt)
HU (1) HUT64403A (pt)
MX (1) MX174264B (pt)
PT (1) PT97553A (pt)
RU (1) RU2013475C1 (pt)
ZA (1) ZA913360B (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995007383A1 (fr) * 1993-09-08 1995-03-16 Mefina S.A. Dispositif pour passer un fil dans le chas d'une aiguille de machine a coudre ou a broder
US6067919A (en) * 1998-05-25 2000-05-30 Brother Kogyo Kabushiki Kaisha Needle threading device used in sewing machine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2906748B2 (ja) * 1991-07-02 1999-06-21 ブラザー工業株式会社 ミシンの糸通し装置
JP4272008B2 (ja) * 2003-07-31 2009-06-03 蛇の目ミシン工業株式会社 ミシンの糸通し装置及び糸通し装置を備えたミシン
JP2008504863A (ja) * 2004-07-05 2008-02-21 インブロ カンパニー リミテッド 糸通し装置
JP4605444B2 (ja) * 2004-07-15 2011-01-05 ブラザー工業株式会社 ミシンの糸掛け装置
EP1749917B1 (de) * 2005-07-25 2013-09-25 BERNINA International AG Vorrichtung zum Sichern der Oberfadenschlaufe nach dem Einfädeln
JP5050493B2 (ja) * 2006-11-10 2012-10-17 アイシン精機株式会社 ミシンの糸通し装置
WO2011038532A1 (zh) * 2009-09-29 2011-04-07 吴渭水 快速穿线的车针装置
DE112012001556B4 (de) * 2012-02-22 2018-11-22 Jaguar International Corp. Einfädler für Overlock-Maschine
CN107054696B (zh) * 2017-05-02 2019-04-30 上海航天控制技术研究所 一种高精度可分离联动机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1065661A (pt) * 1951-08-24 1954-05-28
US2707448A (en) * 1951-06-12 1955-05-03 Naas Nils Reinhold Needle threader device
US2910029A (en) * 1957-07-23 1959-10-27 Singer Mfg Co Needle threaders for sewing machines
GB1184085A (en) * 1967-03-13 1970-03-11 Janome Sewing Machine Co Ltd Threading Device for Sewing Machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR377503A (fr) * 1906-11-09 1907-09-09 Alberik Hotz Appareil pour enfiler les aiguilles de machines à coudre
US2655886A (en) * 1950-02-25 1953-10-20 Cons Sewing Machine & Supply C Machine attached needle threader
US2767671A (en) * 1954-12-15 1956-10-23 Shapiro Samuel Automatic needle threader for sewing machines
JPS4513632Y1 (pt) * 1966-09-07 1970-06-11
US3485194A (en) * 1967-03-27 1969-12-23 Janome Sewing Machine Co Ltd Threading device for sewing machine
SU1057591A1 (ru) * 1982-05-06 1983-11-30 Poluyashkin Evgenij N Приспособление дл вдевани нити в иглу

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707448A (en) * 1951-06-12 1955-05-03 Naas Nils Reinhold Needle threader device
FR1065661A (pt) * 1951-08-24 1954-05-28
US2910029A (en) * 1957-07-23 1959-10-27 Singer Mfg Co Needle threaders for sewing machines
GB1184085A (en) * 1967-03-13 1970-03-11 Janome Sewing Machine Co Ltd Threading Device for Sewing Machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PROFS *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995007383A1 (fr) * 1993-09-08 1995-03-16 Mefina S.A. Dispositif pour passer un fil dans le chas d'une aiguille de machine a coudre ou a broder
US6067919A (en) * 1998-05-25 2000-05-30 Brother Kogyo Kabushiki Kaisha Needle threading device used in sewing machine

Also Published As

Publication number Publication date
AU7635891A (en) 1991-11-07
US5143005A (en) 1992-09-01
CN1024825C (zh) 1994-06-01
CN1056323A (zh) 1991-11-20
ZA913360B (en) 1992-03-25
BG60299B2 (en) 1994-04-25
CH683849A5 (fr) 1994-05-31
CS124791A3 (en) 1992-10-14
RU2013475C1 (ru) 1994-05-30
JPH04227298A (ja) 1992-08-17
CA2041612A1 (fr) 1991-11-04
BR9101790A (pt) 1991-12-17
HUT64403A (en) 1993-12-28
PT97553A (pt) 1993-07-30
HU911475D0 (en) 1991-11-28
MX174264B (es) 1994-05-02
AU647115B2 (en) 1994-03-17

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