Lubricating oil supply structure

A lubricating oil supply structure, comprising:

• a shaft having an outer circumferential surface;
• a bearing, which supports the shaft and has an oil supply port, through which a lubricating oil is supplied to between the shaft and the bearing, and an oil introduction port, through which the lubricating oil between the shaft and the bearing is introduced;
• a first oil passage, which is connected to the oil supply port and distributes the lubricating oil from an oil pump toward the oil supply port;
• a second oil passage, which is connected to the oil introduction port and supplies the lubricating oil introduced through the oil introduction port to a supply destination other than the bearing;
• a connection oil passage, which is formed by a gap between the bearing and the shaft and connects between the first oil passage and the second oil passage;
• and
• a throttle portion, formed on a part of the connection oil passage, configured to suppress a flow of the lubricating oil from the oil supply port toward the oil introduction port,
• wherein:
• an oil groove, extending along a circumferential direction of the shaft, is formed on a part of the outer circumferential surface, the part being supported by the bearing,
• the oil supply port is formed on the bearing surface of the bearing and on a position facing the oil groove in a radial direction of the lubricating oil supply structure,
• the oil introduction port is formed on the bearing surface and on a position which does not face the oil groove in the radial direction, and
• the throttle portion is formed by a gap which is narrower than a gap between a part of the oil groove where the throttle portion is not formed and the bearing surface.