EP2058426B1 - Nähmaschine - Google Patents

Nähmaschine Download PDF

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Publication number
EP2058426B1
EP2058426B1 EP08018718A EP08018718A EP2058426B1 EP 2058426 B1 EP2058426 B1 EP 2058426B1 EP 08018718 A EP08018718 A EP 08018718A EP 08018718 A EP08018718 A EP 08018718A EP 2058426 B1 EP2058426 B1 EP 2058426B1
Authority
EP
European Patent Office
Prior art keywords
adjustment
sewing machine
housing
machine according
presser foot
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.)
Ceased
Application number
EP08018718A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2058426A1 (de
Inventor
Andreas Oberndörfer
Thomas Jordan
Horst Bohl
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.)
Duerkopp Adler AG
Original Assignee
Duerkopp Adler 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 Duerkopp Adler AG filed Critical Duerkopp Adler AG
Publication of EP2058426A1 publication Critical patent/EP2058426A1/de
Application granted granted Critical
Publication of EP2058426B1 publication Critical patent/EP2058426B1/de
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/02—Presser-control devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet

Definitions

  • the invention relates to a sewing machine according to the preamble of claim 1.
  • Such a sewing machine is known from the DE 2 349 290 A .
  • Other sewing machines with adjustable presser foot biasing force are known from the GB-A-111 022 , of the DD-PS 53 542 , of the DD-PS 35,150 and the GB 2 068 027 A .
  • Other sewing machines with adjustable presser foot biasing force are known through public prior use.
  • the adjustment of the presser foot biasing force is in the known sewing machines still in need of improvement. Problems occur in particular in the reproducibility of the preload force, in the precision of the preload adjustment and in the readability of the set preload force. In addition, the adjustment of the biasing force is often cumbersome and requires the use of additional tools in some of the known sewing machines.
  • the radius change is monotone in the mathematical sense.
  • the invention monotonous radius change results in a clear assignment of the biasing force to the position of the actuator. This ensures a very accurate preload force adjustment.
  • the radius change can be continuous or discontinuous.
  • a discontinuous radius change may include multiple radius stages. As a rule, the radius change between the minimum and the maximum radius is strictly monotone.
  • the embodiment according to the invention makes it possible to set over the setting angle range easily readable biasing force markers, for example in the form of a digit or stroke scale.
  • the leaf spring according to the invention is a force spring, which has proven itself for the specification of a presser foot biasing force. Characterized in that the adjusting body for influencing the biasing force directly, so not imparting intermediary other components, applied to the power source, a sensitive adjustment of the biasing force is possible. An additional expense performing mechanism between the actuator and the leaf spring deleted. The adjustment of the preload force is simplified.
  • a course of the jacket wall of the actuator according to claim 2 allows a continuous biasing force specification. Leaves over the spiral course For example, a progression of the increase of the biasing force over the adjusting angle range produce.
  • An adjusting wheel according to claim 3 allows a convenient operation of the adjustment.
  • the setting wheel may have the already mentioned scaling, which cooperates with a housing-side marking for displaying the set biasing force.
  • a fixing unit according to claim 4 allows a well reproducible and not undesirable adjusting biasing force specification.
  • an embodiment of the fixing unit according to claim 5 leads to a particularly comfortable operation.
  • Various preload specifications can be set by clicking the latch unit.
  • the latching body may be mounted in the housing, wherein the latching recess is then embodied in the setting wheel, or may also be mounted in the setting wheel, wherein the latching recess is then embodied in the housing.
  • a radius ratio according to claim 8 allows coverage between minimum and maximum biasing force well adapted to the operating requirements of a sewing machine.
  • a sewing machine 1 of which in the Fig. 1 an upper part and a portion of a base plate are shown, has a stand 2 and an angle thereof extending horizontally extending arm 3. The latter ends in a head 4.
  • the stator 2, the arm 3, the head 4 and the base plate are of a housing 5 of Surround sewing machine 1.
  • an arm shaft not shown in the drawing is rotatably mounted. This drives in the head 4 via a crank drive in the head 4 axially slidably mounted, also not shown needle bar.
  • a needle attached to the lower end of the needle bar is movable up and down on a vertical axis 6 by the crank mechanism.
  • the needle leads in an eye from a needle, also not shown needle needle for sewing two superimposed pieces 7, 8 of fabric.
  • the Nähgut Swisse 7, 8 are during sewing by the sewing machine 1 on a support plate 9 (see. Fig. 2 ).
  • the support plate 9 has a not-shown stitch hole.
  • a presser foot 10 For fixing the Nähgut thoroughlye 7, 8 during sewing is a presser foot 10. This has a foot 11, which presses on the Nähgut thoroughlye 7, 8 from above.
  • the foot part 11 is fastened via a screw 12 to a fabric pressing rod 13.
  • the latter is guided in a guide bush 14 in the head 4 along a pusher axis 15, which runs parallel to the needle bar axis 6.
  • a power source 16 in the form of a leaf spring is used.
  • the leaf spring 16 is supported on the one hand with an end portion 16a on a housing-fixed abutment 17 and is pivotable about a pivot axis 18 there.
  • the leaf spring 16 is supported with an end portion 16 b at a free upper end 19 of the fabric pressing rod 13.
  • the leaf spring 16 extends in the arm 3 substantially horizontally.
  • the upper end 19 of the fabric pressing rod 13 is formed hemispherical in the area of contact of the leaf spring 16, so that the leaf spring 16 is applied to the fabric presser rod 13 defined.
  • an adjusting device 20 (see. Fig. 3 ).
  • the latter has a control body 21, which is rotatably or pivotably mounted in the housing 5 about an actuating shaft 22, with which the actuating body 21 is rotatably connected and which defines a pivot axis 23.
  • the actuator body 21 for influencing the biasing force on the leaf spring 16 between the two end portions 16a, 16b in the Fig. 2 and 3 from above.
  • a measured from the pivot axis 23 of radius R of the jacket wall 24 has a set angle range 25 about the pivot axis 23 a continuously and strictly monotonically changing course. In the execution, in the Fig. 2 and 3 is shown, this course is spiral.
  • the adjusting angle range 25 is about 270 °.
  • other adjusting angle ranges are possible, in particular those which are greater than 180 °.
  • the adjusting angle range can, for example, in a helical configuration of the jacket wall of the actuating body, be greater than 360 °.
  • a radius R of the jacket wall 24 varies between a minimum radius R min and a maximum radius R max .
  • the ratio R max / P min is about 3.
  • other ratios R max / R min are possible, in particular a ratio which is greater than 2.
  • actuating body 21 To actuate the actuating body 21 from an outer side of the housing serves an adjusting wheel 26. This is mechanically connected to the actuating body 21 for pivoting about this about the pivot axis 22. In the execution after Fig. 3 is the thumbwheel 26 via a central screw 27 which is coaxial with the actuating shaft 22, screwed to the control shaft 22.
  • the locking unit 29 has a locking body 29 designed as a ball.
  • the locking body 29 is supported by a coil spring 30, which is supported against the bottom of a blind hole 31, in the Fig. 3 biased to the right. against falling out From the blind hole 31 of the locking body 29 is retained by a retaining sleeve 32 which is fixed in the blind hole 32.
  • the latching body 29 acts in a latching position of the fixing unit 28, which in the Fig. 3 is shown, with a complementary to the locking body 29 formed recess 33 in the control wheel 26 together.
  • the setting wheel 26 has a plurality of such recesses 33, the equally distributed sweep the adjustment angle range 25. For example, two, three, four, five or more ten, for example up to fifty, such recesses 33 may be provided in the adjusting wheel 26.
  • the biasing force of the presser foot 10 is adjusted by means of the adjusting device 20 as follows: Depending on the type and thickness of the sewing material pieces 7, 8 to be sewn, the user of a table takes the pretensioning force to be set. This biasing force is assigned, for example, a number, which in turn is mounted on the user-facing side of the adjusting wheel 26 in the region of the associated recess 33. The user then twists the setting wheel 26 until this digit of a positioning mark 34 (see FIG. Fig. 1 ), which is attached to the housing 5 adjacent to the setting wheel 26, opposite. In this case, the user feels intermediate latching positions of the setting wheel 26 as a single clicks, wherein the locking body 29 in the respective recess 33 on and out of this again.
  • the locking body 29 moves into the in the Fig. 3 illustrated locking position 1 and the setting wheel 26 is fixed in the predetermined position.
  • the jacket wall 24 is located at a predetermined radius, which is usually between R min and R max , on the leaf spring 16, bends them defined and thus spans them according to the vortex Preload force, so that the presser rod 13 and thus also the foot part 11 of the presser foot 10 with this predetermined biasing force when sewing against the Nähgut Publishede 7, 8 presses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP08018718A 2007-11-07 2008-10-25 Nähmaschine Ceased EP2058426B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007052876A DE102007052876A1 (de) 2007-11-07 2007-11-07 Nähmaschine

Publications (2)

Publication Number Publication Date
EP2058426A1 EP2058426A1 (de) 2009-05-13
EP2058426B1 true EP2058426B1 (de) 2010-12-29

Family

ID=40379022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08018718A Ceased EP2058426B1 (de) 2007-11-07 2008-10-25 Nähmaschine

Country Status (5)

Country Link
EP (1) EP2058426B1 (zh)
JP (1) JP5346556B2 (zh)
KR (1) KR101468744B1 (zh)
CN (1) CN101429710B (zh)
DE (2) DE102007052876A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018206088A1 (de) * 2018-04-20 2019-10-24 Dürkopp Adler AG Nähmaschine
CN109537184A (zh) * 2019-01-14 2019-03-29 杰克缝纫机股份有限公司 一种缝纫机及其压脚调压装置
DE102019133956B4 (de) * 2019-12-11 2022-12-29 Lisa Dräxlmaier GmbH Nähmaschine mit einem abstandselement, und verwendung eines abstandselements in einer nähmaschine

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE53542C (de) * L. A. ELSTER, Arzt, und E. YOUNG, Beide in Jeff er sonville, sowie J. E. KNAPP in West - Lancaster, Ohio, V. St. A Schraubensicherung mittelst zwischen zwei Muttern festgeklemmten Legeschlüssels
DD35150A (zh)
DD53542A (zh)
DE35150C (de) * J. SCHERBEL und T. REMUS in Dresden Herstellung gezahnter Eckbänder zur Kantenverbindung von Pappkasten
US1279112A (en) * 1914-10-10 1918-09-17 Singer Mfg Co Presser mechanism for sewing-machines.
DE309985C (zh) * 1917-03-07
GB347854A (en) * 1930-04-09 1931-05-07 Singer Mfg Co Improvements in or relating to work-holders for sewing machines
US2541888A (en) * 1948-04-05 1951-02-13 Singer Mfg Co Speed-responsive presser device for sewing machines
DE873487C (de) * 1951-02-07 1953-04-13 Kochs Adler Ag Stoffdrueckervorrichtung mit mitgehendem und lueftendem Drueckerfuss
GB1059057A (en) * 1964-10-15 1967-02-15 Singer Co Unitary presser bar spring regulating devices
JPS446856Y1 (zh) * 1966-04-11 1969-03-13
US3793969A (en) * 1972-10-03 1974-02-26 Singer Co Presser bar pressure control modules
GB1488364A (en) * 1974-10-02 1977-10-12 Singer Co Presser device for overedge sewing machine
GB2068027B (en) 1980-01-25 1983-04-07 Rossendale Sewing Machine Co L Top spring for sewing machine foot bar
JP2762437B2 (ja) * 1987-06-27 1998-06-04 アイシン精機株式会社 ミシンの押え上げ装置
DE19728817C1 (de) * 1997-07-05 1998-06-04 Duerkopp Adler Ag Betätigungseinrichtung für den Stoffdrücker einer Nähmaschine
EP1115933B1 (de) * 1998-09-26 2003-12-17 Quick Rotan Elektromotoren GmbH Betätigungsvorrichtung
IT1314415B1 (it) * 2000-06-23 2002-12-13 Vi Be Mac Spa Dispositivo per il controllo della pressione dei piedini premistoffaper macchine da cucire o simili.
CN2646176Y (zh) * 2003-11-04 2004-10-06 东莞市寮步恒昌机械厂 电脑多针绗缝机压板调节机构

Also Published As

Publication number Publication date
DE102007052876A1 (de) 2009-05-20
CN101429710B (zh) 2012-11-21
DE102007052876A8 (de) 2009-08-27
KR20090047374A (ko) 2009-05-12
EP2058426A1 (de) 2009-05-13
CN101429710A (zh) 2009-05-13
JP2009112819A (ja) 2009-05-28
JP5346556B2 (ja) 2013-11-20
DE502008002121D1 (de) 2011-02-10
KR101468744B1 (ko) 2014-12-03

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