Bottom line detecting device, bottom line detecting method and sewing machine

The invention discloses a bottom line detecting device and belongs to the technical field of sewing machine parts. The problem that at present, a bottom line detecting device is instable in structure is solved. The bottom line detecting device comprises a shuttle case and a shuttle peg located in th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZENG XUEJIN, LYU ZHAOHUI
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a bottom line detecting device and belongs to the technical field of sewing machine parts. The problem that at present, a bottom line detecting device is instable in structure is solved. The bottom line detecting device comprises a shuttle case and a shuttle peg located in the shuttle case, wherein the shuttle peg comprises a winding post and flanges located at two ends of the winding post. The bottom line detecting device is characterized in that the shuttle case is provided with a detection port I and a detection port II, each flange is provided with a detection part I and a detection part II which can be turned to the detection port I and the detection port II. The bottom line detecting device further comprises a transmitter I and a receiver I which are arranged to directly face the detection port I and further comprises a transmitter II and a receiver II which are arranged to directly face the detection port II. In the bottom line detecting device, due to the fact that the shuttle