US 11,834,766 B2
Sewing device and looper positioning method
Taisuke Morimoto, Tokyo (JP); Yosuke Ikadai, Tokyo (JP); Kazuma Nakayama, Tokyo (JP); and Tohru Takamura, Tokyo (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 22, 2022, as Appl. No. 17/676,836.
Claims priority of application No. 202110323474.X (CN), filed on Mar. 26, 2021.
Prior Publication US 2022/0307178 A1, Sep. 29, 2022
Int. Cl. D05B 1/06 (2006.01); D05B 57/04 (2006.01)
CPC D05B 1/06 (2013.01) [D05B 57/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A sewing device comprising a needle and a looper, the sewing device comprising:
a rotation shaft that rotates the looper: and
a set bolt that has a conical distal end and positions the looper in an axial direction relative to the rotation shaft from a radial direction of the rotation shaft, wherein
the looper includes a through screw hole into which the set bolt is screwed,
the rotation shaft includes a groove recessed from a peripheral surface of the rotation shaft, and
the groove includes an inclined surface that the conical distal end of the set bolt contacts.