SEWING MACHINE COMPRISING THREADING DEVICE

WIPO Patent Application WO/2020/026603

A1

[Purpose] To obtain a sewing machine comprising a device with which it is possible to easily perform a threading operation in which a needle thread is inserted into the needle hole of the sewing machine needle, wherein the sewing machine comprises a threading device configured so that the needle thread does not drop onto or coil around an operation part (operation part) of the operation lever of the threading device when a thread-hooking operation is completed before insertion of the needle thread. [Configuration] The present invention comprises: a needle bar 52; a threading shaft 53; a thread-holding tool 71; a threading tool 72 provided at the bottom end of the threading shaft 53; an operation lever 4 that has an operation part 41 and moves the threading shaft 53 up and down and rotates the threading shaft in the circumferential direction; and a cutting tool 93 for the needle thread n. The present invention is configured such that a needle thread guide member A, in which an inclined part 1 is formed that guides the needle thread n from the thread-holding tool 71 to the cutting tool 93, is provided between the thread-holding tool 71 and the cutting tool 93, and the inclined part of the needle thread guide member A guides the needle thread n that has been cut by the cutting tool out of the operation range of the operation lever 4.

AZUMA TOYOHIRO (JP)
SAWADA TAKUYA (JP)
MAEDA KOJI (JP)

PCT/JP2019/023440

February 06, 2020

June 13, 2019

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JANOME SEWING MACHINE CO LTD (JP)

D05B87/02

JP2005160592A	2005-06-23
JP2006158412A	2006-06-22
JPH10137482A	1998-05-26
JPH08173676A	1996-07-09
JP2000271372A	2000-10-03

See also references of EP 3831996A4

IWAHORI Kunio (JP)

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