Title:
SHUTTLE CASE ALLOWING BACK-STITCHING FOR EXTENDED TIME
Document Type and Number:
WIPO Patent Application WO/2013/115466
Kind Code:
A1
Abstract:
The present invention relates to a shuttle case of a sewing machine allowing high-speed back-stitching, and more specifically to a shuttle case comprising: a gear base plate (1); gears (2a and 2b); an internal case (3); an external case (8); a clutch (4); a clutch guide (5); a clutch plate (6); a hook (7); a bobbin cover case (9); and a fixed shuttle plate (10). The hook (7) is disposed in between the external case (8) and the internal case (3), a plurality of hook holes (14) are formed along the edges of the outer bottom surface of the hook (7), and a bobbin cover case (9) is disposed in the inner case of the hook (7). The shuttle case according to the present invention is produced so as to easily accommodate the bobbin cover case having a bow-shaped bobbin disposed therein, the bow-shaped bobbin allowing dramatically increased length of bobbin thread. Additionally, the shuttle case is lighter and more precise than a traditional a shuttle case due to press production via molds, and thus tasks of transport and exchange thereof is made easier, and when working therewith, despite high-speed operation, noise is notably reduced. Accordingly, the shuttle case according to the present invention has a simple production process and significantly reduced materials expense, thus improving productivity, and thereby dramatically increasing value added.
Inventors:
JEONG JONG CHEOL (KR)
Application Number:
PCT/KR2012/009299
Publication Date:
August 08, 2013
Filing Date:
November 07, 2012
Export Citation:
Assignee:
SINJINSTEEL CO LTD (KR)
International Classes:
D05B57/26
Foreign References:
| US3596619A | 1971-08-03 | |||
| JP2009022360A | 2009-02-05 | |||
| KR200386005Y1 | 2005-06-07 | |||
| KR200219042Y1 | 2001-04-02 |
Attorney, Agent or Firm:
LEE, Jae Chil (KR)
이재칠 (KR)
이재칠 (KR)
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Claims: