EP2221410A1 - Dispositif de verrouillage d' un boîtier de canette - Google Patents

Dispositif de verrouillage d' un boîtier de canette Download PDF

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Publication number
EP2221410A1
EP2221410A1 EP10405008A EP10405008A EP2221410A1 EP 2221410 A1 EP2221410 A1 EP 2221410A1 EP 10405008 A EP10405008 A EP 10405008A EP 10405008 A EP10405008 A EP 10405008A EP 2221410 A1 EP2221410 A1 EP 2221410A1
Authority
EP
European Patent Office
Prior art keywords
bobbin
coil
bobbin case
locking device
bore
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Withdrawn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
EP10405008A
Other languages
German (de)
English (en)
Inventor
Hans Flückiger
Niklaus Wacker
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.)
BERNINA International AG
Original Assignee
BERNINA International AG
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 BERNINA International AG filed Critical BERNINA International AG
Publication of EP2221410A1 publication Critical patent/EP2221410A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/26—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices

Definitions

  • the invention relates to a locking device for a bobbin case for a bobbin according to the preamble of patent claim 1.
  • the bobbin of sewing machines can either be stored directly in the bobbin and is thus directly accessible. It can also be inserted in a specially designed bobbin case, which in turn is mounted in the bobbin.
  • the present invention relates to a bobbin mounted indirectly in a bobbin in the bobbin.
  • the invention can also be applied to a coil which can be used directly in the coil carrier. From the DE-A1 3819405 a bobbin case for rotary gripper is known in which the coil on a cylindrical spool, which is part of the bobbin case, pushed and held by a safety lever.
  • the safety lever designed as a two-armed lever, is held in the two positions (open position and working position) by a spring-loaded plate.
  • the locking is released by manually turning the lever by 90 ° into an axially parallel position. Thereafter, the coil can be lifted out of the bobbin.
  • a coil spring between the coil base, ie the underlying coil flange, and the coil carrier. ' This pushes after release of the coil by the lever, the coil partially out of the bobbin.
  • the spring exerts during braking a braking torque on the coil, which varies depending on the design of the coil surface and can not be influenced. This can hinder the sewing process.
  • a coil holder in which the coil is held by a spring-loaded, can be passed through the coil holding mandrel.
  • the retaining pin can be brought by a quarter turn out of the holder in the removal position and dissolves completely together with the coil from the bobbin. The retaining pin must therefore be inserted into this when inserting a full bobbin and then secured.
  • a locking device for a bobbin wherein the bobbin through the central opening in the coil guided locking device is held on a spring and automatically locks the coil after the complete depression of the coil in the bobbin. By a radial displacement of the locking element to the axis of rotation of the coil, the latter can be released again from the lock. It is then ejected by the spring carrying the locking element.
  • An object of the present invention is to provide a locking device for a bobbin for a bobbin, with the bobbin engaged in the bobbin and can be solved without actuation of a locking means, wherein additionally causes an axial pushing out of the coil or the bobbin from the bobbin after release becomes.
  • the holding position which holds the coil caught in the bobbin, dissolved and at the same time the partial ejection of the bobbin case or, if a bobbin without bobbin is held in the bobbin, the Expulsion of the coil can be initiated.
  • the locking of a new to be inserted into the bobbin bobbin case or a coil by axial insertion of the coil or bobbin case in the bobbin until it reaches the recess in the bobbin and tilts. There are then no further interlocking actions necessary.
  • the coil held by the locking element is braked by the locking element in any way, because the latter does not touch the coil non-positively.
  • the locking device according to the invention consequently requires no latches, slides or flaps.
  • the only, in itself movable element is the coil spring located in the coil or bobbin case, which ensures the locking position after locking and causes the ejection of the coil or the bobbin case when unlocking.
  • no bobbin case hinge is needed and consequently no protruding beyond the capsule or coil parts are present, which could hinder a proper thread passage.
  • the omission of mechanical parts, such as hinges, more space is available on the bobbin case or spool and it can be used a coil with a larger supply of thread.
  • Reference numeral 1 denotes a coil carrier of a gripper assembly 3.
  • the bobbin case 5 with the coil 7 is therefore not yet inserted into the bobbin 1.
  • This is a state as it exists after the replacement / filling of the bobbin 7.
  • a connecting member 11 is placed on a centrally formed mandrel 9. This is axially fixed but rotatably connected to the mandrel 9 and may be made of plastic or metal.
  • the periphery of the connecting member 11 may be cylindrical (not shown) or, as shown in the figures, have a heel-shaped constriction in the upper region.
  • the bobbin case 5 comprises in the center a bore 13, which extends in the upper part a cylindrical and b in the lower part over a portion of the circumference of the bore 13, for example over 180 ° is cylindrical and the opposite region is formed by a cylindrical portion whose Axis inclined to the axis of the other area is (see. Figures 1-4 , left side of the bore 13).
  • the bore 13 may be formed closed or whose cross section has a smaller diameter than the underlying cylindrical portion a of the bore thirteenth
  • a coil spring 17 On a peripheral shoulder 15 or a flat end face formed at the upper end of the connecting member 11 coaxially lying a coil spring 17 is supported.
  • the spring 17 is fixed with its upper end to the bobbin case 5, for example, clamped or glued.
  • the end ring 19 is larger in diameter than the other turns.
  • the coil spring 17 is dimensioned such that when completely in the bobbin 1 locked bobbin case 5, the coil spring 17 is under compressive stress and releasing the bobbin 5, the coil spring 17 at least partially lifts the bobbin case 5 from the bobbin 1 or ejects to seize the the bobbin case 5 to facilitate.
  • a circumferential groove 21 is recessed.
  • the axial height of the groove 21 is slightly greater than the axial height of a over a portion of the bore 13 encircling, inwardly directed, crescent-shaped flange portion 23 on the bobbin case 5.
  • the distance of the inner edge 25 of the flange portion 23 to the opposite non-parallel wall portion b is slightly larger than the diameter of the connecting member 11 (see. FIG. 6 ).
  • a mark 29 is mounted eccentrically.
  • the marking 29 may be a color or consist of a region provided by, for example, a laser beam with grooves or a recess.
  • the seamstress presses with a finger approximately centrally on the bobbin case 5 (arrow F 1 ); upon further pressing, the flange 23, which is present only over a partial area (approximately 180 °), at the lower end of the bore 13, as in FIG. 2 seen, the bobbin case 5 slightly tilted. By this inclination, it is possible that the only partially encircling crescent-shaped flange 23 slide past the lateral surface of the connecting member 11 and then can engage in the groove 21 when the bobbin case 5 tilts back into the horizontal.
  • a coil 7 is shown in axial section, which is not stored in a bobbin case 5. So that it can rotate during sewing within the bobbin 1, a sleeve 31 is rotatably inserted in the center of the coil 7.
  • the sleeve 31 comprises both top and bottom means, such as flanges or flanges 33 which hold the sleeve 31 axially with play in the coil 7.
  • the bore 13 in the sleeve 31 is analogous to the bore 13 in the bobbin case 5 in Examples 1 to 4.
  • the upper portion a is cylindrical and the lower portion b is approximately half inclined to the axis of the bobbin case 5 Cylinder surface running (see also FIG. 2 ).
  • the upper end of the sleeve 31 is closed and serves as an attachment for in the FIG. 5 not shown coil spring 17th
  • a mark 29 is mounted eccentrically to indicate to the operator, at which point when unlocking a contact force F2 has to touch down.
  • the connecting member 11 is part of the mandrel 9, that is, the periphery of the mandrel 9 has the shape of the periphery of the connecting member 11 in the former embodiment.
  • the operation of the insertion or ejection of the bobbin case 5 with the coil 7 is carried out in the same manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
EP10405008A 2009-02-17 2010-01-18 Dispositif de verrouillage d' un boîtier de canette Withdrawn EP2221410A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00250/09A CH700442A1 (de) 2009-02-17 2009-02-17 Verriegelungsvorrichtung für eine Spulenkapsel für eine Unterfadenspule.

Publications (1)

Publication Number Publication Date
EP2221410A1 true EP2221410A1 (fr) 2010-08-25

Family

ID=42236367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10405008A Withdrawn EP2221410A1 (fr) 2009-02-17 2010-01-18 Dispositif de verrouillage d' un boîtier de canette

Country Status (6)

Country Link
US (1) US20100206207A1 (fr)
EP (1) EP2221410A1 (fr)
JP (1) JP2010188129A (fr)
CN (1) CN101805963A (fr)
CH (1) CH700442A1 (fr)
TW (1) TW201031781A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704196A1 (de) * 2010-12-09 2012-06-15 Bernina Int Ag Verriegelungsvorrichtung für eine Spulenkapsel.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012115595A (ja) * 2010-12-03 2012-06-21 Brother Ind Ltd ボビン及びミシン
JP6238571B2 (ja) * 2013-05-24 2017-11-29 蛇の目ミシン工業株式会社 ボビン

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US832414A (en) * 1905-11-16 1906-10-02 Wheeler & Wilson Mfg Co Sewing-machine bobbin-case.
GB1200967A (en) * 1967-08-15 1970-08-05 Miracle Hook Corp Improved sewing hook and bobbin
US4074645A (en) * 1975-12-19 1978-02-21 Durkoppwerke Gmbh Controlled braking device for the gripper-thread bobbin of a double lock-stitch sewing machine
US4216733A (en) * 1979-01-08 1980-08-12 The Singer Company Automatic bobbin winding system
US4326474A (en) * 1981-05-01 1982-04-27 The Singer Company In-place bobbin winding mechanism for a sewing machine
GB2149433A (en) 1983-11-07 1985-06-12 Singer Co Bobbin and plunger assembly
DE3819405A1 (de) 1987-06-15 1988-12-29 Elitex Zavody Textilniho Spulenkapsel fuer umlaufgreifer von naehmaschinen
DE19510830A1 (de) 1995-03-24 1996-09-26 Duerkopp Adler Ag Spulenbremse für die Greiferfaden-Spule einer Doppelsteppstich-Nähmaschine
EP1541736A2 (fr) * 2003-12-10 2005-06-15 Fritz Gegauf Ag Bernina-Nähmaschinenfabrik Dispositif de verrouillage pour une bobine de fil de canette
DE102008014913B3 (de) * 2008-03-19 2009-07-30 Dürkopp Adler AG Greifer für eine Doppel-Steppstich-Nähmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US388323A (en) * 1888-08-21 Jasper yannett
US1185235A (en) * 1913-11-12 1916-05-30 Standard Sewing Machine Co Bobbin-case latch for sewing-machines.
US1235323A (en) * 1917-01-31 1917-07-31 Ralph Simpson Kelso Revolving-hook construction for sewing-machines.
US1702383A (en) * 1924-03-26 1929-02-19 Singer Mfg Co Sewing-machine bobbin-case latch
US2813500A (en) * 1951-06-26 1957-11-19 Singer Mfg Co Bobbin-cases for sewing machines
US2848965A (en) * 1954-01-25 1958-08-26 White Sewing Machine Corp Sewing machine
US3323743A (en) * 1965-09-27 1967-06-06 Walter D Landgraf Ribbon spool
US3381643A (en) * 1966-10-10 1968-05-07 Singer Co Bobbin-supporting assemblies for sewing machines

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US832414A (en) * 1905-11-16 1906-10-02 Wheeler & Wilson Mfg Co Sewing-machine bobbin-case.
GB1200967A (en) * 1967-08-15 1970-08-05 Miracle Hook Corp Improved sewing hook and bobbin
US4074645A (en) * 1975-12-19 1978-02-21 Durkoppwerke Gmbh Controlled braking device for the gripper-thread bobbin of a double lock-stitch sewing machine
US4216733A (en) * 1979-01-08 1980-08-12 The Singer Company Automatic bobbin winding system
US4326474A (en) * 1981-05-01 1982-04-27 The Singer Company In-place bobbin winding mechanism for a sewing machine
GB2149433A (en) 1983-11-07 1985-06-12 Singer Co Bobbin and plunger assembly
DE3819405A1 (de) 1987-06-15 1988-12-29 Elitex Zavody Textilniho Spulenkapsel fuer umlaufgreifer von naehmaschinen
DE19510830A1 (de) 1995-03-24 1996-09-26 Duerkopp Adler Ag Spulenbremse für die Greiferfaden-Spule einer Doppelsteppstich-Nähmaschine
EP1541736A2 (fr) * 2003-12-10 2005-06-15 Fritz Gegauf Ag Bernina-Nähmaschinenfabrik Dispositif de verrouillage pour une bobine de fil de canette
EP1541736B1 (fr) 2003-12-10 2008-05-21 BERNINA International AG Dispositif de verrouillage pour une bobine de fil de canette
DE102008014913B3 (de) * 2008-03-19 2009-07-30 Dürkopp Adler AG Greifer für eine Doppel-Steppstich-Nähmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704196A1 (de) * 2010-12-09 2012-06-15 Bernina Int Ag Verriegelungsvorrichtung für eine Spulenkapsel.

Also Published As

Publication number Publication date
US20100206207A1 (en) 2010-08-19
CN101805963A (zh) 2010-08-18
CH700442A1 (de) 2010-08-31
JP2010188129A (ja) 2010-09-02
TW201031781A (en) 2010-09-01

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