Motor with thrust bearing
AssigneeSunonwealth Electric Machine Industry Co., Ltd.
InventorAlex Horng
Life of this patent
Estimating the term…
Abstract
A motor includes a bearing sleeve arranged with a base and having opposite opening and sealing ends; a stator coupled with the base or bearing sleeve; and a rotating member disposed in the bearing sleeve and including a shaft and a limiting portion adjacent to the sealing end. A first end of the shaft connects with the limiting portion, a second end of the shaft has a coupling portion, and the limiting portion has a first contact surface. A thrust bearing is arranged between the shaft and the bearing sleeve and has a second contact surface facing the first contact surface. At least one of the first and second contact surfaces is an uneven surface. A hub is coupled with the coupling portion of the shaft and has a permanent magnet corresponding to the stator.
Claims18
A motor with a thrust bearing, comprising:
- a base;
- a bearing sleeve arranged with the base and having an opening end and a sealing end, with the opening and the sealing ends opposite to each other;
- a stator coupled with the base or the bearing sleeve;
- a rotating member disposed in in the bearing sleeve and comprising a shaft and a limiting portion, wherein a first end of the shaft connects with the limiting portion, a second end of the shaft has a coupling portion, and the limiting portion has a first contact surface;
- a thrust bearing arranged between the shaft and an inner surface of the bearing sleeve, so that the limiting portion is between the thrust bearing and the sealing end, wherein the thrust bearing has a second contact surface facing the first contact surface, and at least one of the first contact surface and the second contact surface is an uneven surface, wherein an interface between the first contact surface and the second contact surface is point contact;
- and
- a hub coupled with the coupling portion of the shaft and having a permanent magnet corresponding to the stator.
Dependencies are inferred from the claim text.