公开(公告)号：US20190229570A1

公开(公告)日：2019-07-25

申请号：US16142489

申请日：2018-09-26

Applicant: H. S. MACHINERY CO., LTD.

Inventor： Tzu Sang CHAN

IPC: H02K1/30 ,  H02K5/20 ,  H02K9/06 ,  H02K11/215 ,  D05B69/12 ,  D05B69/30 ,  D05B71/00

Abstract: A drive apparatus for sewing machines including a forepart and a motor shaft horizontally projecting out of the forepart is provided with a sleeve releasably secured to the motor shaft; a rotor disposed on the sleeve; and a motor assembly including a housing having an axial passage with the sleeve rotatably disposed through, an inner space disposed on an end of the housing proximate the forepart, and a stator set disposed in the inner space. The rotor is disposed in the inner space. The rotor, the sleeve, and the motor shaft are co-rotated.

公开(公告)号：US20190226135A1

公开(公告)日：2019-07-25

申请号：US16142539

申请日：2018-09-26

Applicant: H. S. MACHINERY CO., LTD.

Inventor： Tzu Sang CHAN

IPC: D05B71/00

Abstract: A heat dissipation apparatus for a sewing machine including a forepart and a motor shaft horizontally projecting out of the forepart includes a sleeve releasably secured to the motor shaft and including a first fan mounted thereon; a stator seat including an axial channel with the sleeve rotatably disposed through, and a plurality of first air inlets; and a guide member fastened between the stator seat and the forepart and including a disc-shaped opening with the first fan rotatably disposed therein. In response to activating the first fan, air is drawn through the first air inlets and a gap between the stator seat and the guide member prior to exiting the forepart.