Motor unit
Provided is a unit including: a housing configured to accommodate a planetary gear mechanism, in which the housing includes a flow path through which a coolant flows, the planetary gear mechanism includes a ring gear fixed to the housing, and the flow path has a portion that overlaps the ring gear when viewed in a radial direction.
1 . A unit comprising: a housing configured to accommodate an oil and a planetary gear mechanism, the housing being provided below a vehicle room in a vertical line direction, wherein
the housing includes a flow path through which a coolant made of a material different from the oil flows,
the planetary gear mechanism includes a ring gear fixed to the housing,
a protrusion portion is provided on an outer peripheral side of a portion that supports the ring gear,
the protrusion portion protrudes outward in a radial direction from the outer peripheral side toward an inside of the flow path,
the protrusion portion is provided in a spiral shape whose position in an axial direction varies,
the flow path has a flow path portion sandwiched between the vehicle room and the ring gear when viewed in the radial direction, and
the protrusion portion has a portion that overlaps the ring gear when viewed in the radial direction.
2 . The unit according to claim 1 , wherein
a spiral portion of the protrusion portion overlaps the ring gear when viewed in the radial direction.
3 . The unit according to claim 1 , wherein
the flow path overlaps a large pinion gear of a stepped pinion gear of the planetary gear mechanism when viewed in the axial direction.
4 . The unit according to claim 1 , wherein
the housing includes a flow path-equipped case including the flow path and a facing case that faces the flow path-equipped case, and
the flow path extends in a direction away from a mating surface of the flow path-equipped case and the facing case when viewed in the radial direction.
5 . The unit according to claim 3 , wherein
the housing includes a flow path-equipped case including the flow path and a facing case that faces the flow path-equipped case, and
the flow path extends in a direction away from a mating surface of the flow path-equipped case and the facing case when viewed in the radial direction.
6 . The unit according to claim 1 , wherein
the flow path includes a portion through which the coolant flows downward from above.
7 . A unit comprising: a housing configured to accommodate an oil and a planetary gear mechanism, wherein
the housing includes a flow path through which a coolant made of a material different from the oil flows,
the planetary gear mechanism includes a ring gear fixed to the housing,
the planetary gear mechanism includes a stepped pinion gear including a large pinion gear and a small pinion gear that has a smaller diameter than the large pinion gear,
the ring gear meshes with the small pinion gear,
the flow path has a portion that overlaps the ring gear when viewed in a radial direction, and
the flow path overlaps the large pinion gear when viewed in an axial direction.
8 . The unit according to claim 7 , wherein
the housing includes a protrusion portion that overlaps the ring gear when viewed in the radial direction, and
the protrusion portion protrudes toward the flow path.
9 . The unit according to claim 8 , wherein
a spiral portion of the protrusion portion overlaps the ring gear when viewed in the radial direction.
10 . The unit according to claim 7 , wherein
the housing includes a flow path-equipped case including the flow path and a facing case that faces the flow path-equipped case, and
the flow path extends in a direction away from a mating surface of the flow path-equipped case and the facing case when viewed in the radial direction.
11 . The unit according to claim 7 , wherein
the flow path includes a portion through which the coolant flows downward from above.
12 . The unit according to claim 1 , wherein
the housing includes a flow path-equipped case including the flow path and a facing case that faces the flow path-equipped case, and
the coolant flows in a direction away from a mating surface of the flow path-equipped case and the facing case when viewed in the radial direction.
13 . A unit comprising: a housing configured to accommodate an oil and a planetary gear mechanism, wherein
the housing includes a flow path through which a coolant made of a material different from the oil flows,
the planetary gear mechanism includes a ring gear fixed to the housing,
the flow path has a portion that overlaps the ring gear when viewed in a radial direction,
the housing includes a protrusion portion that overlaps the ring gear when viewed in the radial direction,
the protrusion portion is provided on an outer peripheral side of a connection wall portion that supports the ring gear,
the protrusion portion extends outward in the radial direction from the outer peripheral side,
the housing includes a flow path-equipped case including the flow path and a facing case that faces the flow path-equipped case, and
the flow path extends in a direction away from a mating surface of the flow path-equipped case and the facing case when viewed in the radial direction.
14 . The unit according to claim 13 , wherein
a spiral portion of the protrusion portion overlaps the ring gear when viewed in the radial direction.
15 . The unit according to claim 13 , wherein
the flow path overlaps a large pinion gear of a stepped pinion gear of the planetary gear mechanism when viewed in an axial direction.
16 . The unit according to claim 13 , wherein
the flow path includes a portion through which the coolant flows downward from above.