Motor and axial fan

Abstract

A motor includes a rotor rotatable in a circumferential direction around a center axis extending vertically, a stator to rotate the rotor, a lead wire connected to the stator, and a housing covering the rotor and the stator from a radially outer side. The housing includes a first housing located on a first side in an axial direction, and a second housing located on a second side in the axial direction. The first housing includes a wiring convex portion protruding toward the second side in the axial direction. The second housing includes a wiring recess that is recessed toward the second side in the axial direction and penetrates in a radial direction. The wiring convex portion is located in the wiring recess. The wiring convex portion includes a tip surface opposing the second side. The wiring recess includes a bottom surface opposing the first side.

What is claimed is: 
     
         1 . A motor comprising:
 a rotor rotatable about a center axis extending vertically;   a stator to rotate the rotor; and   a housing covering the rotor and the stator from a radially outer side; wherein   the housing includes a first housing located on a first side in an axial direction, and a second housing located on a second side in the axial direction;   the housing includes a through-hole penetrating in the axial direction, the through-hole includes a first through-hole located in the first housing, and a second through-hole located in the second housing; and   at least one of the first through-hole and the second through-hole includes a small-diameter portion, and a large-diameter portion having a larger hole diameter than the small-diameter portion.   
     
     
         2 . The motor according to  claim 1 , wherein the small-diameter portion and the large-diameter portion are provided in the first through-hole, the small-diameter portion of the first through-hole is located on the first side in the axial direction, and the large-diameter portion of the first through-hole is located on the second side in the axial direction. 
     
     
         3 . The motor according to  claim 1 , wherein the small-diameter portion and the large-diameter portion are provided in the second through-hole, the small-diameter portion of the second through-hole is located on the second side in the axial direction, and the large-diameter portion of the second through-hole is located on the first side in the axial direction. 
     
     
         4 . The motor according to  claim 1 , wherein one of the first housing and the second housing includes a convex portion protruding to the radially inner side from a radially inner surface, another one of the first housing and the second housing includes a recess that is recessed in the axial direction and in which the convex portion is located, and the convex portion is provided at an outer edge portion of the through-hole. 
     
     
         5 . The motor according to  claim 1 , wherein the small-diameter portion of the through-hole is a hole into which a fastener including a screw portion is screwed, and a hole diameter of the large-diameter portion is larger than an outer diameter of the screw portion. 
     
     
         6 . The motor according to  claim 1 , wherein a length of the small-diameter portion in the axial direction is shorter than a length of the large-diameter portion in the axial direction. 
     
     
         7 . An axial fan including the motor according to  claim 1 , and a rotor blade attached to the rotor.