Stator and stator sealing method
A stator comprises a cylindrical stator core centered on an axis, a coil arranged wound around a tooth disposed on the stator core, the tooth protrudes to one side in radial direction of the stator core, and the stator comprises a resin portion sealing up each of the stator core and the coil, the resin portion has a gate mark that lies on one side with respect to the coil in the radial direction of the stator core, the gate mark lies on outer side with respect to an end face of the stator core in the axial direction, the gate mark overlaps in position with the coil in the radial direction of the stator core.
1 . A stator comprising:
a cylindrical stator core centered on an axis;
a coil arranged wound around a tooth disposed on the stator core, the tooth protruding to one side in a radial direction of the stator core;
a resin portion sealing up each of the stator core and the coil; and
an insulating member that restrains the coil, which is wound around the tooth, from moving to one side in the radial direction of the stator core,
the resin portion having a gate mark that lies on one side with respect to the coil in the radial direction of the stator core,
the gate mark lying on an outer side with respect to an end face of the stator core in an axial direction of the stator core, the gate mark overlapping in position with the coil in the radial direction of the stator core, wherein
the insulating member includes a locking portion which retains the coil and which restrains the coil from moving to an inner peripheral side in the radial direction, and
the gate mark of the resin portion and the locking portion of the insulating member overlap in position in the radial direction of the stator core.
2 . The stator of claim 1 , wherein
the stator core comprises a plurality of the teeth, wherein
the coils arranged wound around the plurality of teeth, respectively, are connected to each other by welding, on the outer side with respect to one end face of the stator core in the axial direction, and wherein
the gate mark lies on the outer side with respect to other end face of the stator core in the axial direction.
3 . The stator of claim 1 , wherein
the stator core comprises a plurality of the teeth, and wherein
the resin portion has the gate mark at positions where the gate mark overlaps, in the radial direction of the stator core, with each of the coils arranged wound around the plurality of teeth, respectively.
4 . The stator of claim 1 , wherein
the stator core comprises a plurality of the teeth, and wherein
the resin portion has the gate mark at positions where the gate mark overlaps, in the radial direction of the stator core, with at least one of the coils that is wound around the plurality of teeth, respectively.
5 . The stator of claim 1 , wherein the gate mark of the resin portion is located axially outward of the end face of the stator core and radially inward of the coil so as to overlap with the coil in the radial direction of the stator core.
6 . The stator according to claim 1 , wherein
the gate mark lies in a position, which is located on the outer side of the end face of the stator core in the axial direction of the stator core, and which overlaps with the coil in the radial direction of the stator core.