Take-up lever device, link mechanism and production process of link mechanism
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 浙江博盟精工轴承有限公司
- Publication Date
- 2020-05-05
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Abstract
Description
technical field
[0001] The invention relates to the field of thread take-up levers, in particular to a thread take-up lever device, a link mechanism and a production process of the link mechanism. Background technique
[0002] The thread take-up lever device is a relatively important part in the sewing machine. The invention patent of application number CN201810624291.X discloses a thread take-up lever structure of the sewing machine, which includes the thread take-up lever body of the sewing machine. The holes are slotted holes. Both ends of the threading hole are arc-shaped; the threading hole is an oval long slotted hole. The above-mentioned patent makes the thread passing resistance of the hooking mechanism small, and the amount of thread feeding and the pulling force of the upper thread remain stable when the thread take-up lever moves to different positions, so that the tension of the suture thread is stable, and the stitches during sewing of clothes are stable. [0...