An embodiment may provide a motor including a shaft, a rotor coupled to the shaft, and a stator disposed between the shaft and the rotor, wherein the rotor includes a yoke coupled to the shaft and a driving magnet and a sensing magnet which are coupled to the yoke, the sensing magnet includes a first sensing magnet and a second sensing magnet, a first pole and a second pole are alternately disposed on a first circumference of the first sensing magnet, and the second sensing magnet is disposed on a second circumference having a radius different from a radius of the first circumference and includes a first pole and a second pole of which a length in a circumferential direction is different from a length of the first pole of the second sensing magnet in the circumferential direction.

An electric motor, at least having a stator and an annular rotor which are arranged next to one another along an axial direction; wherein the stator has a plurality of stator teeth which are arranged next to one another along a circumferential direction and which each extend along the axial direction. At least one coil has at least one turn is arranged on each stator tooth, wherein the at least one turn is electrically conductively connected to a printed circuit board. The printed circuit board is arranged on an end side of the stator and next to the stator along the axial direction. The printed circuit board comprises a plurality of electrical connecting lines via which the at least one turn of each coil is connected at least to other turns or to an electrical connection of the motor.

A motor for driving lenses is provided. The motor includes a case, a yoke fixed in the case, a magnet fixed in the yoke, a carrier equipped with lenses and installed in the magnet such that the carrier moves up and down within the magnet, a coil coupled with the carrier, in which the coil cooperates with the magnet to move up and down the carrier, a spring unit including first and second springs having arc shapes and being separated from each other while forming a ring shape as a whole, a spacer supporting the outer peripheral surface of the spring unit, and a terminal provided on the spacer.

An optical member driving mechanism is provided, including a first movable portion, a fixed portion, and a first driving assembly. The first movable portion is connected to an optical member. The first movable portion is movable relative to the fixed portion. The first driving assembly is configured to drive the first movable portion to move relative to the fixed portion.

The present disclosure includes drive modules for motor-drive assemblies of an industrial automation system. The drive modules may include a housing having a cavity and may also include power circuitry and control circuitry. The power circuitry may convert input DC power to three-phase controlled frequency AC power and may supply the three-phase controlled frequency AC power to a motor. The control circuitry may apply control signals to control operation of the motor. The drive module may also include an adapter that couples to a first end of the housing and couples the housing to the motor. The adapter may be removable and sized according to a frame size of the motor such that the drive module is compatible with the motor. The housing may be independent of the frame size of the motor. As such, the housing may be interchangeable for any motor frame size and/or motor power.

An impeller comprising a hub, a shroud, a plurality of blades, and circumferential outlet. The hub extends to an outer diameter and is rotatable about a longitudinal axis. The should defines an inlet aperture, extends to the outer diameter, and is offset from the hub along the longitudinal axis to define a passageway between the hub and the shroud. The plurality of blades are located between the hub and the shroud, the blades dividing the passageway into a plurality of passages between each of the plurality of blades. The circumferential outlet is between the hub and the shroud adjacent the outer diameter. Airflow is generated by the plurality of blades, the airflow passing along a flow path within each of the plurality of passages. A size of a cross-sectional area perpendicular to the flow path increases linearly along the flow path from the inlet aperture to the circumferential outlet.

The present disclosure provides a linear motor having a housing with an accommodation space; a vibrator accommodated in the accommodation space; and a first stator locating opposite to the vibrator and fixed to the housing. The first stator includes a first circuit board opposite to the vibrator, a first coil on a the side of the first circuit board close to the vibrator, and a first magnetic conductive sheet locating on a side of the first circuit board away from the vibrator. The linear motor further has a spring bracket supporting the vibrator in the accommodation space. The present invention is to provide a linear motor which improves the space utilization of the linear motor in a thickness direction.

The disclosure relates to a linear actuator including a base, a linear motor, a load cell and a rotary motor. The linear motor is disposed on the base and includes a fixed coil module and a movable magnetic backplane. The fixed coil module is fixed on the base, and the movable magnetic backplane is configured to slide relative to the fixed coil module along a first direction. The rotary motor is rotated around a central axis in parallel with the first direction. The load cell has two opposite sides parallel to the first direction, respectively. The movable magnetic backplane of the linear motor and the rotary motor are connected to the two opposite sides of the load cell, respectively. The load cell is subjected to a force applied thereto by the rotary motor and parallel to the first direction, and configured to convert the force into an electrical signal.

An electric work machine in one aspect of the present disclosure includes an electric power input terminal, a motor, a circuit board, a first heat dissipation plate, and a second heat dissipation plate. The circuit board includes a first surface and an electronic circuit on the first surface. The electronic circuit controls supply of AC power to the motor. The electronic circuit includes an electronic component that generates Joule heat. The first heat dissipation plate is spaced from the first surface by a first distance in parallel to the first surface. The second heat dissipation plate is spaced from the first surface by a second distance in parallel to the first surface. The second heat dissipation plate is thermally coupled with the first heat dissipation plate. The second distance is smaller than the first distance.

The invention relates to a guiding element for use in an electric motor, an electric motor, and a method of installing a rotatable element in an electric motor. The guiding element comprises a guide for a rotatable element of the electric motor. The guide is adapted to radially guide the rotatable element relative to a rotary axis. The guiding element also comprises a centering device adapted to align and/or fix a sensor holding device in the electric motor relative to the guiding element. Moreover, the guiding element comprises a fixing device adapted to fix the guiding element to a housing of the electric motor.