Patent ID: 9556547
Date: 2017-01-31
CPC Classifications: D05B

Claim:
1. A sewing machine that is capable of detecting a sewing target feeding length, comprising: a presser rod having one end coupled with a sewing machine main body; a presser main body mounted on the other end of the presser rod; a movable presser portion that is mounted on the presser main body, and that is arranged such that it can be pressed in contact with a sewing target and such that it can be moved in a feeding direction in which the sewing target is fed; a movement transmission portion configured to have an one end that can engage with the movable presser portion, and that moves according to a movement of the movable presser portion, and to have an other end that moves within the sewing machine main body according to the movement of the sewing target in the feeding direction; a detection unit that is included in the sewing machine main body, and that detects a change in position of the other end of the movement transmission portion due to a movement of the one end of the movement transmission portion; and a calculation unit that calculates a change in position of the movable presser portion based on a detection result obtained by the detection unit.