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Title:
SEWING MACHINE AND BIRD'S NEST PREVENTION DEVICE THEREOF, AND SEWING MACHINE PRESSER FOOT
Document Type and Number:
WIPO Patent Application WO/2019/101033
Kind Code:
A1
Abstract:
A sewing machine and a bird's nest prevention device thereof, and a sewing machine presser foot. The bird's nest prevention device comprises a line hooking component (2), a driving member, a mounting frame assembly (4), a first connecting rod (5), a line hooking connecting plate (6), a second connecting rod (7) and an air suction pipe (8); the driving member comprises a driving member body and a driving rod, the driving member body being mounted on the mounting frame assembly (4); a first end of the first connecting rod (5) is hinged to the mounting frame assembly (4); a second end of the first connecting rod (5) is hinged to a first end of the line hooking connecting plate (6), and the tail part of the line hooking component (2) is mounted on a second end of the line hooking connecting plate (6); two ends of the second connecting rod (7) are respectively hinged to the middle part of the first connecting rod (5) and the driving rod; the air suction pipe (8) is mounted on the mounting frame assembly (4) and located below the line hooking connecting plate (6), the line hooking component (2) can move along the top wall of the air suction pipe (8), ends of the line hooking component (2) have hook-shaped portions (22) for hooking lines, and the pipe port of the air suction pipe (8) is arranged toward the hook-shaped portions (22). Connecting a cylinder (3) with the line hooking component (2) by means of a connecting-rod connection method can ensure that the line hooking component (2) outputs blades quickly and the position of blade outputting is stable. A semicircular blade (3') is arranged inside the sewing machine presser foot, being able to ensure smooth and stable line cutting, reducing blade wearing, and having short cut threads.

Inventors:
JIANG, Jinyuan (No.312, Haimiaojiangjia Village Yongan Road Stree, Laizhou Shandong 0, 261400, CN)
LI, Zhizhao (No.315, Yangwugou Village Yongan Road Stree, Laizhou Shandong 0, 261400, CN)
Application Number:
CN2018/116154
Publication Date:
May 31, 2019
Filing Date:
November 19, 2018
Export Citation:
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Assignee:
STRONG H MACHINERY TECHNOLOGY CO., LTD (No. 1699 Kaiming Road, Chenggang Road StreetLaizhou, Shandong 0, 261400, CN)
International Classes:
D05B65/06; D05B29/12
Foreign References:
CN207512388U2018-06-19
CN207567456U2018-07-03
CN105544098A2016-05-04
CN204738119U2015-11-04
CN206204567U2017-05-31
CN204702920U2015-10-14
JP2001170387A2001-06-26
US3532065A1970-10-06
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (7th Floor, Scitech PlaceNo.22 Jian Guo Men Wai Ave.,Chao Yang District, Beijing 4, 100004, CN)
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