| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sewing machine capable of cooling a motor for feed efficiently by air blown by a fan.SOLUTION: A sewing machine includes: a horizontal feed mechanism 46; a motor 80 for feed; a lower shaft 22; and a radiation fan 90. The horizontal feed mechanism 46 is provided in a bed part, and a horizontal feed action in frontward/backward direction is imparted to a feed dog 36. The motor 80 for feed drives the horizontal feed mechanism 46. The lower shaft 22 extends parallel with respect to an output shaft 37 of the motor 80 for feed in the bed part, and drives by a sewing machine motor 24. The radiation fan 90 is fixed at a position close to a side surface 85 of the motor 80 for feed in the lower shaft 22. The radiation fan 90 continuously rotates at high speed together with the lower shaft 22. The sewing machine can send the air blown by the radiation fan 90 directly to the side surface 85 of the motor 80 for feed and a heat sink 81. Therefore, the sewing machine can cool the motor 80 for feed efficiently.</p> |
