Thread tensioner for a sewing machine

摘要

Thread tensioner for a sewing machine. In one example embodiment, a thread tensioner for a sewing machine includes a first disk, a second disk, a spring, a knob, and a sensor. The second disk is positioned next to the first disk. The spring is configured to apply tension to a thread positioned between the first disk and the second disk by exerting a force against the second disk. The spring defines a length between a first end and a second end. The knob is configured, when rotated in one direction, to travel along a threaded shaft toward the spring and thereby cause the length of the spring to shorten. The knob is configured, when rotated in another direction, to travel along the threaded shaft away from the spring and thereby allow the length of the spring to lengthen. The sensor is configured to track a current length of the spring.

主权项

1. A thread tensioner for a sewing machine, the thread tensioner comprising:
a first disk; a second disk positioned next to the first disk; a spring configured to apply tension to a thread that is positioned between the first disk and the second disk by exerting a force against the second disk, the spring defining a first end, a second end, and a length between the first end and the second end, the spring being coupled to a rod extending from the second end of the spring; a knob configured, when rotated in a first direction, to travel along a threaded shaft toward the spring and thereby cause the length of the spring to shorten, the knob further configured, when rotated in a second direction, to travel along the threaded shaft away from the spring and thereby allow the length of the spring to lengthen; and a sensor configured to track a current length of the spring by tracking the position of the rod.