Shuttle hook driver for sewing machine
AssigneeBrother Kogyo Kabushiki Kaisha
InventorSatoshi Kato
Life of this patent
Estimating the term…
Abstract
A shuttle hook driver for a sewing machine includes a stepping motor for driving a shuttle hook capturing a thread loop in cooperation with a sewing needle, the stepping motor including a drive shaft, the shuttle hook including a hook shaft, an elastic member provided on a connecting member connecting between an end of the drive shaft of the stepping motor and an end of shuttle hook so as to be capable of transmitting a driving force of the drive shaft to shuttle hook and of buffing, and a damping mechanism provided on the connecting member for damping rotation of each one of the hook shaft and the drive shaft relative to the other.
Claims20
A shuttle hook driver for a sewing machine comprising:
- a stepping motor for driving a shuttle hook capturing a thread loop in cooperation with a sewing needle, the stepping motor including a drive shaft, the shuttle hook including a hook shaft;
- an elastic member provided on a connecting member connecting between an end of the drive shaft of the stepping motor and an end of the shuttle hook so as to transmit a driving force of the drive shaft to the shuttle hook and so as to serve as a buffer;
- and
- a damping mechanism provided on the connecting member for damping rotation of each one of the hook shaft and the drive shaft relative to the other.
A shuttle hook driver for a sewing machine comprising:
- a stepping motor for driving a shuttle hook capturing a thread loop in cooperation with a sewing needle, the stepping motor including a drive shaft, the shuttle hook including a hook shaft;
- and
- a torque damping member provided on a connecting member connecting between an end of the drive shaft of the stepping motor and an end of the hook shaft of the shuttle hook so as to transmit a driving force of the drive shaft to shuttle hook and so as to serve as a buffer, the torque damping member damping rotation of either the hook shaft or the drive shaft relative to each other.
A shuttle hook driver for a sewing machine comprising:
- a stepping motor for driving a shuttle hook capturing a thread loop in cooperation with a sewing needle, the stepping motor including a drive shaft, the shuttle hook including a hook shaft;
- an elastic member provided on a connecting member connecting between an end of the drive shaft of the stepping motor and an end of the shuttle hook so as to transmit a driving force of the drive shaft to the shuttle hook and so as to serve as a buffer;
- and
- a rotary oil damper mounted on the drive shaft of the stepping motor.
Dependencies are inferred from the claim text.