Title:
LOWER THREAD SUPPLY DEVICE OF SEWING MACHINE, AND SEWING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/230777
Kind Code:
A1
Abstract:
The present invention relates to a lower thread supply device of a sewing machine, and a sewing method, and to a lower thread supply device and a sewing method for sewing a fabric by using the lower thread supply device in a variegated manner, the device comprising: a bobbin case (300) having an outlet (330) from which a lower thread is drawn out, and a needle through-hole (340) through which a needle (600), lowering while an upper thread (a) is inserted thereinto, passes; and a hook body (200) rotatably provided by means of a power device of a sewing machine by having the bobbin case (300) mounted therein, inducing a sewn fabric-side upper thread (a2) to a front area of the bobbin case (300) while hooking the upper thread (a) on a hook (210) and drawing the same, and also inducing an upper thread (a1) to a rear area of the bobbin case (300), wherein the bobbin case (300) is provided so as not to rotate when the hook body (200) rotates, and the outlet (330) is formed at a position in which the needle (600) can lower to the left side of a lower thread (b) drawn out of the outlet (330) in the front side of the outlet (330), such that the upper thread is pulled by being hooked on the hook (210) on the front left side of the lower thread (b) drawn out of the outlet (330).
Inventors:
HEO PILL HO (KR)
Application Number:
PCT/KR2017/011789
Publication Date:
December 20, 2018
Filing Date:
October 24, 2017
Export Citation:
Assignee:
HEO PILL HO (KR)
International Classes:
D05B59/00
Foreign References:
| KR101626018B1 | 2016-05-31 | |||
| KR20170040595A | 2017-04-13 | |||
| KR100819907B1 | 2008-04-08 | |||
| KR101657607B1 | 2016-09-19 | |||
| KR101492604B1 | 2015-02-11 | |||
| KR100819907B1 | 2008-04-08 |
Other References:
See also references of EP 3640386A4
Attorney, Agent or Firm:
PATENT LAW FIRM GRAND KOREA (KR)
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