ELECTRIC PUMP APPARATUS

摘要

An electric pump apparatus includes a bracket, a pump and a motor. The pump includes a pump flange at a front side thereof. The pump flange is attached to the bracket. The motor includes a motor flange at a front side thereof, and the motor flange is attached to the bracket. The bracket ensures a gap between the pump and a machine base to allow for disposition of tubes in the gap. The bracket also ensures a gap between the motor and the machine base to allow for disposition of tubes in the gap. The pump and the tubes overlap and the motor and the tubes overlap, as viewed in plan, such that the electric pump apparatus and the tubes occupy a small floor area.

主权项

1. An electric pump apparatus to be mounted on a machine base having a horizontal mounting surface, the apparatus including a pump for generating an oil pressure, a motor for driving the pump, and a bracket supporting the pump and the motor,
wherein the motor is a servo motor with a cooling fan, and the motor comprises: a motor flange connected to the bracket by bolts; a motor shaft disposed horizontally and extending through the motor flange; a rotor mounted on the motor shaft; a stator surrounding the rotor; a motor frame accommodating the rotor and the stator together; a sensor connected to a rear end of the motor shaft; and a fan cover enclosing at least the sensor, the cooling fan being accommodated in the fan cover for air-cooling the motor frame, wherein the bracket comprises: a base portion to be secured to the machine base; and a support plate extending upwardly from the base portion to ensure a gap of a predetermined size between the pump and the mounting surface and a gap of a predetermined size between the motor and the mounting surface, the support plate comprising a pump-side support plate and a motor-side support plate disposed a predetermined distance away from the pump-side support plate.