An induction motor may include a stator assembly and a rotor assembly that revolves or rotates around the state assembly. Additionally, a pole pitch of the induction motor may be less than two inches. The stator assembly may also optionally include a fractional slot winding.

This canned motor (10) is provided with a rotor (14); a cylindrical rotor can (42) that houses the rotor (14); an end plate (40) that covers an opening of the rotor can (42) in the axial direction and is joined to the rotor can (42); a rotating shaft (16) that passes through the rotor (14) and the end plate (40); and an annular wall (46) that surrounds the outer circumference of the rotating shaft (16), is joined to or integrated with the end plate (40), and is joined to the entire circumference of the rotating shaft (16) at an end thereof in the axial direction. The thickness of the end plate (40) is larger than the thickness of the annular wall (46).

This canned motor (10) is provided with a rotor (14); a cylindrical rotor can (42) that houses the rotor (14); an end plate (40) that covers an opening of the rotor can (42) in the axial direction and is joined to the rotor can (42); a rotating shaft (16) that passes through the rotor (14) and the end plate (40); and an annular wall (46) that surrounds the outer circumference of the rotating shaft (16), is joined to or integrated with the end plate (40), and is joined to the entire circumference of the rotating shaft (16) at an end thereof in the axial direction. The thickness of the end plate (40) is larger than the thickness of the annular wall (46).

A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.

The present invention provides an induction motor for leakage protection, and relates to the technical field of induction motors. The induction motor is composed of a tail shell, a cooling fan, a plastic shell, a stator, an end cover and a rotating shaft. The open end of the tail shell and the plastic shell are fixedly installed; the cooling fan is installed inside the plastic shell; the stator is fixedly installed inside the plastic shell; the rotating shaft is movably connected in the stator; one end of the plastic shell away from the tail shell is fixedly provided with the end cover; the surface of the rotating shaft is coated with an insulating layer to increase insulation property. The present invention solves the problem that the time of a user is greatly wasted.

The present invention provides an induction motor for leakage protection, and relates to the technical field of induction motors. The induction motor is composed of a tail shell, a cooling fan, a plastic shell, a stator, an end cover and a rotating shaft. The open end of the tail shell and the plastic shell are fixedly installed; the cooling fan is installed inside the plastic shell; the stator is fixedly installed inside the plastic shell; the rotating shaft is movably connected in the stator; one end of the plastic shell away from the tail shell is fixedly provided with the end cover; the surface of the rotating shaft is coated with an insulating layer to increase insulation property. The present invention solves the problem that the time of a user is greatly wasted.

A tool comprising a drive-in element, transferring a fastening element into a substrate along setting axis by a setting energy E.sub.kin, a drive for driving the drive-in element along the setting axis, the drive comprising a capacitor, a rotor, and a coil, wherein current flows through the coil generating a magnetic field accelerating the drive-in element toward the fastening element, wherein a current intensity A.sub.coil of current flowing through the excitation coil while discharging the capacitor has a time profile with a rising edge, a maximum current intensity A.sub.max and a falling edge, A.sub.coil rising during current rise time Δt.sub.rise from 0.1 to 0.8 times A.sub.max and during impact time Δt.sub.impact is more than 0.5 times the A.sub.max, wherein Δt.sub.rise is at least 0.020 ms and at most 0.275 ms and/or the impact time Δt.sub.impact is at least 0.15 ms and at most 2.0 ms.

A tool comprising a drive-in element, transferring a fastening element into a substrate along setting axis by a setting energy E.sub.kin, a drive for driving the drive-in element along the setting axis, the drive comprising a capacitor, a rotor, and a coil, wherein current flows through the coil generating a magnetic field accelerating the drive-in element toward the fastening element, wherein a current intensity A.sub.coil of current flowing through the excitation coil while discharging the capacitor has a time profile with a rising edge, a maximum current intensity A.sub.max and a falling edge, A.sub.coil rising during current rise time Δt.sub.rise from 0.1 to 0.8 times A.sub.max and during impact time Δt.sub.impact is more than 0.5 times the A.sub.max, wherein Δt.sub.rise is at least 0.020 ms and at most 0.275 ms and/or the impact time Δt.sub.impact is at least 0.15 ms and at most 2.0 ms.

An electric machine includes a stator and a rotor. The rotor includes stacked laminations forming a rotor core. The rotor rotates relative to the stator about a central axis. The rotor core has an outer diameter. Each lamination includes a plurality of magnet slots. Each magnet slot includes a ferrite permanent magnet located therein, adjacent pairs of the ferrite permanent magnets defining a number of poles. Each of the laminations includes a plurality of non-circular rotor bar apertures spaced about the central axis of the rotor and disposed adjacent to and radially inward of the rotor outer diameter. A non-cylindrical rotor bar is disposed in each respective of the plurality of rotor bar apertures. The rotor bars are formed of a conductive material, wherein at least some of the plurality of rotor bars collectively form a rotor bar cage.

An electric machine includes a stator and a rotor. The rotor includes stacked laminations forming a rotor core. The rotor rotates relative to the stator about a central axis. The rotor core has an outer diameter. Each lamination includes a plurality of magnet slots. Each magnet slot includes a ferrite permanent magnet located therein, adjacent pairs of the ferrite permanent magnets defining a number of poles. Each of the laminations includes a plurality of non-circular rotor bar apertures spaced about the central axis of the rotor and disposed adjacent to and radially inward of the rotor outer diameter. A non-cylindrical rotor bar is disposed in each respective of the plurality of rotor bar apertures. The rotor bars are formed of a conductive material, wherein at least some of the plurality of rotor bars collectively form a rotor bar cage.