Patent ID: 8550720
Filing Date: 2013-10-08
Classification: F16C

Abstract:
1. A positioning device for a motor bearing comprising: a shaft tube including a receptacle having an inner periphery; a support member comprising: an outer periphery slideably received in the inner periphery of the receptacle; first and second ends spaced along an axis; a through-hole extending from the first end through the second end along the axis, the through-hole including an inner periphery having a diameter and including a restraining portion having a diameter smaller than the diameter of the inner periphery of the through-hole; a support portion extending axially along the outer periphery of the support member beyond the first end of the support member, the support portion having a supporting surface; a bearing comprising: an outer periphery received in the inner periphery of the receptacle; an end facing the first end of the support member; a pressing surface extending at acute angles from the outer periphery and the end of the bearing and aligned with the support portion of the support member, the supporting surface faces, abuts with, and is parallel to the pressing surface; a groove defined by the pressing surface and the inner periphery of the receptacle; and the support portion extends into and fills the groove when the bearing is supported by the support member, wherein the support portion includes a plurality of protrusions, wherein the first end of the support member includes an end face having inner and outer peripheral edges spaced in a radial direction perpendicular to the axis, and wherein each of the plurality of protrusions extends in the radial direction from the outer peripheral edge towards but spaced from the inner peripheral edge of the end face of the first end of the support member.