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Patent Searching and Data


Title:
SEWING MACHINE
Document Type and Number:
WIPO Patent Application WO/2021/227264
Kind Code:
A1
Abstract:
A sewing machine, comprising a presser foot lifting assembly (20). The presser foot lifting assembly comprises a presser rod (21) capable of moving up and down, a presser foot (22) mounted at the lower end of the presser rod, and a guide frame (23) fixed on the presser rod. The sewing machine further comprises a drive source, a drive crank (50) driven by the drive source to rotate, an automatic presser foot lifting clutch assembly (60) connected between the drive crank and the guide frame, a handle (80) located on the outer side of a sewing machine housing (10), and a manual presser foot lifting clutch assembly (90) connected between the handle and the guide frame. When the automatic presser foot lifting clutch assembly enables power transmission between the drive crank and the guide frame, the manual presser foot lifting clutch assembly disables power transmission between the handle and the guide frame; when the manual presser foot lifting clutch assembly enables power transmission between the handle and the guide frame, the automatic presser foot lifting clutch assembly disables power transmission between the drive crank and the guide frame. The presser foot of the sewing machine can not only be automatically lifted, but also can be lifted manually, so that the operational convenience is improved, and usage properties of the sewing machine are improved.

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Inventors:
GUAN JIANPING (CN)
TAN XINMIN (CN)
HONG ZHIMIN (CN)
XU JUNHUI (CN)
Application Number:
PCT/CN2020/107003
Publication Date:
November 18, 2021
Filing Date:
August 05, 2020
Export Citation:
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Assignee:
JACK SEWING MACHINE CO LTD (CN)
International Classes:
D05B29/02; D05B47/04
Foreign References:
CN205501597U2016-08-24
CN110923967A2020-03-27
CN110983643A2020-04-10
US4246856A1981-01-27
CN107237055A2017-10-10
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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