Title:
BOBBIN CASE
Document Type and Number:
WIPO Patent Application WO/2022/111487
Kind Code:
A1
Abstract:
The present invention relates to the technical field of sewing machine accessories, and in particular to a bobbin case. The bobbin case comprises a bobbin case body, a thread pressing and force adjusting mechanism, a handle, and a thread pressing block; a snap-fit sheet is provided on the side wall of the bobbin case body in a protruding manner; the thread pressing block is slidably connected to the bobbin case body; the bobbin case body is provided with an open thread cavity; the top of the bobbin case body is provided with a thread passing groove, a thread passing hole, a thread guiding groove, and a thread outlet groove; the thread passing hole is communicated with the open thread cavity; two ends of the thread passing groove is communicated with an opening of the open thread cavity and the thread passing hole, respectively; a thread pressing surface of the thread pressing block and the side wall of the thread guiding groove define a thread pressing gap; two ends of the thread pressing gap are respectively communicated with the thread passing hole and the thread outlet groove; one end of the handle is rotatably connected to the bobbin case body; and the thread pressing and force adjusting mechanism is provided on the bobbin case body and used for adjusting thread pressing force of the thread pressing block. The present invention is ingenious in structural design, short in thread outlet distance, good in thread outlet tension consistency, convenient and efficient in thread ball replacement, easy in unwinding length control and high in unwinding precision, and the disassembly and assembly of the present bobbin case and an inner bobbin frame are convenient and labor-saving.
Inventors:
FANG DUO (CN)
ZHOU YAOHUA (CN)
ZHOU YAOHUA (CN)
Application Number:
PCT/CN2021/132585
Publication Date:
June 02, 2022
Filing Date:
November 23, 2021
Export Citation:
Assignee:
ZHONGSHAN YINUOTE INTELLIGENT TECH CO LTD (CN)
International Classes:
D05B57/26; D05B57/00; D05B57/10
Foreign References:
| CN214088944U | 2021-08-31 | |||
| CN112481847A | 2021-03-12 | |||
| JPS5264332A | 1977-05-27 | |||
| CN110846823A | 2020-02-28 | |||
| CN106637731A | 2017-05-10 | |||
| JPH03114495A | 1991-05-15 | |||
| CN104562468A | 2015-04-29 | |||
| CN106192242A | 2016-12-07 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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