Lubricant supply system
The present disclosure relates to a lubricant supply system, and more specifically, to a lubricant supply system applied to a motor for a vehicle. The lubricant supply system of the present disclosure includes a carrier that fixes the carrier bearing adjacent to the needle bearing to the motor housing, secures the flow path along which lubricant is supplied to one surface of the carrier, and includes the oil guide that stores the supplied lubricant during high-speed rotation and supplies the lubricant to other parts during low-speed rotation, thereby minimizing forced lubrication compared to conventional lubricant supply systems and smoothly supplying oil to the needle bearing and the carrier bearing even during high-speed rotation using a centrifugal force and wind power generated naturally from the on-axis rotors.
1 . A lubricant supply system mounted on a motor, comprising:
a carrier which has an insertion hole formed at a central portion thereof and in which a carrier bearing, which is one of parts of the motor, is inserted into the insertion hole;
an oil flow path inserted into a housing of the motor; and
an oil guide that is coupled to the carrier and guides a flow of lubricant,
wherein the carrier has one surface facing the housing, and
the oil flow path has an outlet disposed to face the one surface of the carrier so that lubricant is sprayed onto the oil guide coupled to the carrier.
2 . The lubricant supply system of claim 1 , wherein the oil flow path includes:
a main flow path connected to a pump that supplies lubricant and formed to extend in a radial direction of the motor; and
a forced lubrication reduction flow path formed to extend from the main flow path toward the one surface of the carrier.
3 . The lubricant supply system of claim 2 , wherein the oil guide is coupled to the one surface of the carrier, and
is coupled at a position at which lubricant is received from the forced lubricant reduction flow path.
4 . The lubricant supply system of claim 1 , wherein the oil guide includes:
a fixed part which is inserted into and coupled to the carrier and in which a hole-in guide flow path along which lubricant flows is perforated at a central portion thereof; and
an oil collection part that is formed to extend from the fixed part and collects lubricant when the motor rotates.
5 . The lubricant supply system of claim 4 , wherein the guide flow path includes an inclined surface, which is not parallel to an axial direction and a radial direction of the motor, at an end portion of the oil collection part side.
6 . The lubricant supply system of claim 4 , wherein the carrier is coupled to a pin in which an oil storage flow path in which lubricant is stored is formed to extend in an axial direction of the motor, and
the fixed part is inserted into the oil storage flow path of the pin.
7 . The lubricant supply system of claim 6 , wherein the oil guide is formed integrally with the pin.
8 . The lubricant supply system of claim 6 , wherein the pin includes an open groove that is open with a larger cross-sectional area than the oil storage flow path, is formed at one end to which the oil guide is coupled, and communicates with the oil storage flow path.
9 . The lubricant supply system of claim 4 , wherein the oil collection part includes:
a first extension that has one end connected to an end of the fixed part and formed to extend in a radial direction of the motor to come into contact with the one surface of the carrier;
a second extension formed to extend from the first extension in the axial direction of the motor; and
a third extension formed to extend from the second extension and formed to extend so that an end is positioned in a region in which the guide flow path is formed.
10 . The lubricant supply system of claim 9 , wherein the third extension is formed to extend obliquely so as not to be parallel to the axial direction and radial direction of the motor.
11 . The lubricant supply system of claim 4 , wherein the oil collection part includes:
a fourth extension that has one end connected to an end of the fixed part and formed to extend flatly in a radial direction of the motor to come into contact with the one surface of the carrier; and
a fifth extension formed to extend from the fourth extension and formed to extend so that an end is positioned in a region in which the guide flow path is formed.
12 . The lubricant supply system of claim 11 , wherein the fifth extension is formed to extend obliquely so as not to be parallel to the axial direction and radial direction of the motor.