Title:
NEEDLE-THREADING DEVICE FOR SEWING MACHINE AND SEWING MACHINE COMPRISING SAID DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/220016
Kind Code:
A1
Abstract:
A needle-threading device (B) for a sewing machine, comprising a needle-threading shaft (10) that is parallel to a vertically moving needle bar (4) and that is capable of vertical motion and rotation, an operation lever (20) that causes the needle-threading shaft (10) to descend and to rotate, a needle-threading tip part (30) that is provided to the lower end of the needle-threading shaft (10) and that has a needle-threading hook (31), and a needle-threading stopper (6) that is provided to the needle bar (4) and that regulates the descent stopping position of the needle-threading shaft (10), wherein: after descending via the actuation of the operation lever (20), the needle-threading tip part (30) rotates at the descent stopping position and inserts the needle-threading hook (31) into an eye of a needle (2) of one needle (1) among a plurality of needles (1) provided to the needle bar (4), the needle-threading tip part (30) comprises a sliding body (40) that moves vertically relative to the needle-threading shaft (10), a positioning body (50) that is slidable with respect to the sliding body (40), and interlocking mechanisms (13, 54) that cause the sliding body (40) to move vertically with respect to the needle-threading shaft (10) in accordance with the sliding of the positioning body (50), and it is possible to thread a plurality of needles (1) having different height positions with threads (T).
Inventors:
BAMBA YOSHITAKA (JP)
MIFUJI TOMORO (JP)
MIFUJI TOMORO (JP)
Application Number:
PCT/JP2022/012649
Publication Date:
October 20, 2022
Filing Date:
March 18, 2022
Export Citation:
Assignee:
JANOME CORP (JP)
International Classes:
D05B87/02
Foreign References:
| JP2008295743A | 2008-12-11 | |||
| JPH03251292A | 1991-11-08 | |||
| JPH057683A | 1993-01-19 | |||
| JPH057682A | 1993-01-19 | |||
| JPH1099581A | 1998-04-21 | |||
| JPH0464386A | 1992-02-28 |
Attorney, Agent or Firm:
SAITO Nobuto (JP)
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