TWI818045B

This lubricating pump device is used to deliver lubricating oil to a valve piping path R in which a valve (Vt) actuated by pressurizing and depressurizing the lubricating oil is provided and which discharges the lubricating oil. The lubricating pump device is provided with: a pump (2); a supply pipe path (5) for supplying the lubricating oil from the pump (2) to a delivery opening (4); a depressurizing pipe path (6) for depressurizing the inside of the valve piping path R through the supply pipe path (5); a switching valve (20) for opening or closing the depressurizing pipe path (6) by means of forward and backward movement of a spool (21); an electromagnetic actuator (30) for moving the spool (21) of the switching valve (20) forward and backward so as to open the depressurizing pipe path (6) when de-energized and to close the depressurizing pipe path (6) when energized; and a lever mechanism (40) for increasing the force of forward and backward movement of the rod (31) of the electromagnetic actuator (30) an