A method of manufacturing a rotor, including: a ring-shaped magnet forming step of forming a ring-shaped magnet by arranging a plurality of segment magnets that have been magnetized, in a ring shape; an insertion step of inserting a shaft serving as a rotary shaft into a through hole of the ring-shaped magnet from an end portion of the shaft on an axial of the shaft; and a sleeve mounting step of mounting a sleeve for fixing the ring-shaped magnet to the shaft, to an outer periphery of the ring-shaped magnet positioned around an outer periphery of the shaft.

A fluid system for a well includes an electric motor in a housing with an outer surface in fluid communication with a flow of fluid in a pipe. The motor includes an electric stator, a rotor supported to rotate on a rotational axis and be driven by the stator while in fluid communication with the fluid, and a non-metallic sleeve between the rotor and the stator to seal the stator from the fluid. The housing is submerged in the fluid within the pipe, and includes a power cable extending from the motor through a sidewall of the pipe. A fluid end coupled to the housing includes an inlet and an impeller, where the fluid end drives the fluid through the pipe. A seal carried by the fluid system is downstream from the inlet and seals a space between the fluid end and an inner wall of the pipe.

A fluid system for a well includes an electric motor in a housing with an outer surface in fluid communication with a flow of fluid in a pipe. The motor includes an electric stator, a rotor supported to rotate on a rotational axis and be driven by the stator while in fluid communication with the fluid, and a non-metallic sleeve between the rotor and the stator to seal the stator from the fluid. The housing is submerged in the fluid within the pipe, and includes a power cable extending from the motor through a sidewall of the pipe. A fluid end coupled to the housing includes an inlet and an impeller, where the fluid end drives the fluid through the pipe. A seal carried by the fluid system is downstream from the inlet and seals a space between the fluid end and an inner wall of the pipe.

Apparatuses, temperature sensors, and methods for assembling an e-motor axial stator winding temperature sensor are disclosed. In a particular embodiment, the temperature sensor includes a housing configured to be fixed relative to an electric motor. The temperature sensor also includes a plunger disposed in the housing and a thermal sensor disposed in the plunger. In this embodiment, the plunger is movable relative to the housing to position the thermal sensor relative to the electric motor.

Apparatuses, temperature sensors, and methods for assembling an e-motor axial stator winding temperature sensor are disclosed. In a particular embodiment, the temperature sensor includes a housing configured to be fixed relative to an electric motor. The temperature sensor also includes a plunger disposed in the housing and a thermal sensor disposed in the plunger. In this embodiment, the plunger is movable relative to the housing to position the thermal sensor relative to the electric motor.

A laminated body manufacturing device includes a feed mechanism, a receiving member, a dividing mechanism and a squeeze. The feed mechanism is capable of feeding plural iron core members including locking iron core members and non-locking iron core members. The locking iron core members have locking pieces at an outer periphery or inner periphery thereof, and the non-locking iron core members do not have the locking pieces. The receiving member is capable of receiving the iron core members fed from the feed mechanism. The dividing mechanism is disposed between the feed mechanism and the receiving member and controls feeding of the iron core members to the receiving member. The squeeze is disposed between the feed mechanism and the dividing mechanism and laterally supports the iron core members fed from the feed mechanism. At least one of the iron core members is composed as a block body

A laminated body manufacturing device includes a feed mechanism, a receiving member, a dividing mechanism and a squeeze. The feed mechanism is capable of feeding plural iron core members including locking iron core members and non-locking iron core members. The locking iron core members have locking pieces at an outer periphery or inner periphery thereof, and the non-locking iron core members do not have the locking pieces. The receiving member is capable of receiving the iron core members fed from the feed mechanism. The dividing mechanism is disposed between the feed mechanism and the receiving member and controls feeding of the iron core members to the receiving member. The squeeze is disposed between the feed mechanism and the dividing mechanism and laterally supports the iron core members fed from the feed mechanism. At least one of the iron core members is composed as a block body

A rotor according to the present disclosure includes a rotor body including a field coil, a shaft fixed to the rotor body and constituting a rotating shaft, a first resin molded body covering an outer peripheral surface of the shaft protruding from the rotor body in the direction of the rotating shaft, a slip ring installed on an outer peripheral surface of the first resin molded body, one end is electrically connected to the slip ring in the first resin molded body, and the other end is a rotor provided with a bus bar protruding from the first resin molded body and electrically connected to the field coil, and the other end of the bus bar protruding from the first resin molded body is sealed to the second resin molded body separate from the first resin molded body.

A rotor according to the present disclosure includes a rotor body including a field coil, a shaft fixed to the rotor body and constituting a rotating shaft, a first resin molded body covering an outer peripheral surface of the shaft protruding from the rotor body in the direction of the rotating shaft, a slip ring installed on an outer peripheral surface of the first resin molded body, one end is electrically connected to the slip ring in the first resin molded body, and the other end is a rotor provided with a bus bar protruding from the first resin molded body and electrically connected to the field coil, and the other end of the bus bar protruding from the first resin molded body is sealed to the second resin molded body separate from the first resin molded body.

The present application provides a brushless hollow cup motor including a housing, a stator assembly fixed to the housing, a rotor assembly rotatably connected to the housing, a front cover and a bracket mounted on two ends of the housing, a circuit board fixed to the bracket, and an outlet terminal fixed to the circuit board. The stator assembly is provided around the rotor assembly. The front cover is engaged with the housing through a first limiting structure and fixedly welded to one end of the housing, the bracket is engaged with the housing through a second limiting structure and fixed to the other end of the housing, and the rotor assembly is rotatably connected to the front cover and the bracket. The brushless hollow cup motor has a simple structure, which facilitates ensuring an accurate and uniform position of the motor outlet, saves costs, and improves productivity.