ATE521745T1 - CONTROL DEVICE FOR LOWER THREAD TENSION - Google Patents

CONTROL DEVICE FOR LOWER THREAD TENSION

Info

Publication number
ATE521745T1
ATE521745T1 AT09176975T AT09176975T ATE521745T1 AT E521745 T1 ATE521745 T1 AT E521745T1 AT 09176975 T AT09176975 T AT 09176975T AT 09176975 T AT09176975 T AT 09176975T AT E521745 T1 ATE521745 T1 AT E521745T1
Authority
AT
Austria
Prior art keywords
thread
tensioning spring
lower thread
control device
support member
Prior art date
Application number
AT09176975T
Other languages
German (de)
Inventor
Hiroyuki Kazehare
Original Assignee
Juki Kk
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 Juki Kk filed Critical Juki Kk
Application granted granted Critical
Publication of ATE521745T1 publication Critical patent/ATE521745T1/en

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

A lower thread tension control device (1) includes a thread tensioning spring means (20) and an electromagnet (26). The thread tensioning spring means (20) includes a support member (17) having an L-shaped section and is made of a magnetic material, an adjust screw (19) which is screwed to the support member (17) through an intermediate portion (14c) of the thread tensioning spring (14), and a support shaft (18) which having both ends attached to the bobbin case (11) to rotatably support the support member (17). A pressing force of the thread pressing portion (14a) of the thread tensioning spring (14) against the lower thread is controlled in accordance with a change in a current to be supplied to the electromagnet (26), and by adjusting an initial tension of the lower thread in accordance with a screwing amount of the adjust screw (19).
AT09176975T 2008-11-25 2009-11-25 CONTROL DEVICE FOR LOWER THREAD TENSION ATE521745T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008299413A JP5253980B2 (en) 2008-11-25 2008-11-25 Lower thread tension control device

Publications (1)

Publication Number Publication Date
ATE521745T1 true ATE521745T1 (en) 2011-09-15

Family

ID=42034543

Family Applications (1)

Application Number Title Priority Date Filing Date
AT09176975T ATE521745T1 (en) 2008-11-25 2009-11-25 CONTROL DEVICE FOR LOWER THREAD TENSION

Country Status (4)

Country Link
EP (1) EP2196572B1 (en)
JP (1) JP5253980B2 (en)
CN (1) CN101736537B (en)
AT (1) ATE521745T1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6692573B2 (en) * 2016-01-15 2020-05-13 Juki株式会社 Sewing machine bobbin case
JP6861807B2 (en) * 2016-10-08 2021-04-21 エーリコン テクスティル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトＯｅｒｌｉｋｏｎ Ｔｅｘｔｉｌｅ ＧｍｂＨ ＆ Ｃｏ． ＫＧ A device for cooling the heated yarn
CN106637731A (en) * 2017-02-16 2017-05-10 吴江市震宇缝制设备有限公司 Thread disorder prevention cop latch of sewing machine
KR102452185B1 (en) 2018-06-22 2022-10-11 가부시키가이샤 테크니카 2 needle lock stitch sewing machine
CN115262112B (en) * 2022-08-25 2023-12-12 中山市伊诺特智能科技有限公司 General shuttle sleeve for computerized embroidery machine and sewing machine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3051108A (en) * 1961-08-24 1962-08-28 Singer Mfg Co Tension release mechanism for sewing machines
JPS6117736Y2 (en) * 1980-09-26 1986-05-30
JPS58216090A (en) * 1982-06-10 1983-12-15 蛇の目ミシン工業株式会社 Apparatus for controlling tension of lower yarn of sewing machine
JPS61228895A (en) * 1985-04-03 1986-10-13 株式会社廣瀬製作所 Inner hook safety apparatus of sewing machine using full rotation hook
JPS61268292A (en) * 1985-05-23 1986-11-27 蛇の目ミシン工業株式会社 Needle and bobbin thread regulator of sewing machine
JPH0568764A (en) * 1991-09-13 1993-03-23 Juki Corp Bobbin thread controlling device for sewing machine
JP2008023047A (en) * 2006-07-20 2008-02-07 Juki Corp Bobbin thread tension control device
JP2008119078A (en) * 2006-11-09 2008-05-29 Juki Corp Bobbin thread tension control device of sewing machine
JP5197129B2 (en) * 2008-04-24 2013-05-15 Ｊｕｋｉ株式会社 Lower thread tension control device
JP5147518B2 (en) * 2008-04-24 2013-02-20 Ｊｕｋｉ株式会社 Lower thread tension control device

Also Published As

Publication number Publication date
EP2196572A1 (en) 2010-06-16
JP2010124863A (en) 2010-06-10
EP2196572B1 (en) 2011-08-24
CN101736537A (en) 2010-06-16
JP5253980B2 (en) 2013-07-31
CN101736537B (en) 2013-05-29

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties