Patent ID: 9006944
Filing Date: 2015-04-14
Classification: H02K

Abstract:
1. A motor comprising: a base including a shaft tube, with the shaft tube including an open end and a closed end, with a shaft supporting assembly received in the shaft tube and including a top portion facing the open end; a rotor including a shaft supported by the shaft supporting assembly and rotatable about a longitudinal axis, with the shaft including a retaining groove, with the rotor including a hub to which an end of the shaft is coupled; and a stator coupled to the shaft tube of the base, with the stator including at least one limiting member having a distal end facing the shaft, with the at least one limiting member defining an opening through which the shaft extends to engage with the shaft supporting assembly, with the distal end of the at least one limiting member received in the retaining groove of the shaft and preventing disengagement of the shaft from the shaft supporting assembly, with the at least one limiting member further including a bottom facing the shaft supporting assembly, with a gap and a supporting member formed between the bottom of the at least one limiting member and the top portion of the shaft supporting assembly, with the supporting member being closer to the shaft tube than to the shaft, with the gap being closer to the shaft than to the shaft tube, with the gap providing a space for deformation of the at last one limiting member, wherein the distal end of the at least one limiting member extends into the retaining groove of the shaft, and wherein the at least one limiting member has an axial thickness gradually reducing from the supporting member to the distal end thereof, with the at least one limiting member including a side facing the hub of the rotor and having a dust collecting section, and with the dust collecting section being a groove or rugged face.