An electromagnetically actuable brake device includes: a coil shell, in particular of the solenoid, an armature disk, which is connected to the coil shell in a torque-proof yet displaceable manner, a sensor having a sensor housing, a spring part, and a screwed cable gland. The coil shell has a stepped through bore, the sensor housing of the sensor has a stepped configuration, the screwed cable gland is situated at an end of the bore, in particular is screwed into a threaded section of the bore, the spring part is situated in the bore between the screwed cable gland and the sensor housing, the spring part is braced on a step of the sensor housing on one side and on the screwed cable gland on the other, and the sensor housing is pressed against a step of the bore, in particular by the spring part.

A sensor board is downsized. An electric work machine includes a stator, a rotor rotatable about a rotation axis, magnetic sensors, a sensor board supporting the magnetic sensors, and an output unit drivable by the rotor. The stator includes a stator core, an insulator, and coils including first-, second-, and third-phase coils. The rotor includes a rotor core and magnets fixed to the rotor core. The magnetic sensors detect the magnets and include, in a circumferential direction, a first magnetic sensor aligned with at least a portion of a first coil pair, a second magnetic sensor aligned with at least a portion of a second coil pair, and a third magnetic sensor aligned with at least a portion of a third coil pair.

A sensor board is downsized. An electric work machine includes a stator, a rotor rotatable about a rotation axis, magnetic sensors, a sensor board supporting the magnetic sensors, and an output unit drivable by the rotor. The stator includes a stator core, an insulator, and coils including first-, second-, and third-phase coils. The rotor includes a rotor core and magnets fixed to the rotor core. The magnetic sensors detect the magnets and include, in a circumferential direction, a first magnetic sensor aligned with at least a portion of a first coil pair, a second magnetic sensor aligned with at least a portion of a second coil pair, and a third magnetic sensor aligned with at least a portion of a third coil pair.

A switching device for an electric motor comprises a fixed body, at least one moveable body that can be moved with respect to the fixed body between at least one first and one second position, in which the phases (104, 105, 016) are respectively in a first and a second electrical configuration, and a moving unit configured to move said moveable body between the first and the second position. This moving unit can be selectively coupled to the rotor of the electric motor so as to rotate with it and comprises a selecting device operationally placed between the rotor and the moveable body of the switching device and configured to transform each revolution of the rotor into a movement of the moveable body between the first and the second position.

A device is provided with an electronics housing for accommodating electronics for a sensor or an actuator, and a functional housing separate from the electronics housing in a disassembled state of the device. The functional housing accommodates the sensor or the actuator. The two housings are connected to each other in an assembled state of the device. During the transfer of the device into its assembled state, the housings can be connected in a form-locked manner to each other only by a linear movement thereof relative to each other along an assembly axis. The two housings include latch mechanisms corresponding to each other for this purpose.

A device is provided with an electronics housing for accommodating electronics for a sensor or an actuator, and a functional housing separate from the electronics housing in a disassembled state of the device. The functional housing accommodates the sensor or the actuator. The two housings are connected to each other in an assembled state of the device. During the transfer of the device into its assembled state, the housings can be connected in a form-locked manner to each other only by a linear movement thereof relative to each other along an assembly axis. The two housings include latch mechanisms corresponding to each other for this purpose.

The present invention addresses the problem of providing a rotating machine drive system comprising a winding switching device, wherein the rotating machine drive system has a relatively simple configuration, allows wear of electrical contacts during switching and sliding to be minimized, and is highly reliable. The present invention is characterized in comprising a rotating machine having a plurality of windings, an inverter device for operating the rotating machine at variable speed, and a winding switching device for switching connection of the plurality of windings; the winding switching device having winding terminals, a semi-moving element having a short-circuit part that faces the winding terminals and also having a sliding part provided with first protrusions on the surface thereof opposite from the surface having the short-circuit part, and a moving element facing the sliding part of the semi-moving element and having a sliding part provided with second protrusions on the surface facing the sliding part of the semi-moving element; the moving element being made to slide relative to the semi-moving element, whereby the connection between the winding terminals and the short-circuit part is changed and the connection of the plurality of windings is switched.

Provided is an inspection device for a rotating electric machine, the inspection device including a photographing device, a drive mechanism, a display, and a controller. The photographing device photographs a pattern formed on a surface of a wedge constituting part of an armature. The drive mechanism moves the photographing device with respect to a stator functioning as the armature. The controller detects strain of the wedge by comparing image data of the pattern photographed by the photographing device with reference data of the pattern. In this manner, the inspection device for a rotating electric machine can easily detect the strain of the wedge. Further, the controller estimates loosening of the wedge based on the strain of the wedge, and informs an operator of the rotating electric machine through the display that the loosening of the wedge has occurred.

Provided is an inspection device for a rotating electric machine, the inspection device including a photographing device, a drive mechanism, a display, and a controller. The photographing device photographs a pattern formed on a surface of a wedge constituting part of an armature. The drive mechanism moves the photographing device with respect to a stator functioning as the armature. The controller detects strain of the wedge by comparing image data of the pattern photographed by the photographing device with reference data of the pattern. In this manner, the inspection device for a rotating electric machine can easily detect the strain of the wedge. Further, the controller estimates loosening of the wedge based on the strain of the wedge, and informs an operator of the rotating electric machine through the display that the loosening of the wedge has occurred.

A reciprocating motor comprising SSR's Solid State Relays, photoelectric switch sensor and semicircular reflective surface, a wiring circuit for converting DC direct current to AC alternating current as an output current used to switch the electromagnet poles having as a result the attraction and repellent reaction with magnets poles located in the pistons. These said pistons are moving up and down (reciprocating motion) getting the rotation motion of the crankshaft and therefore the mechanical motion of the motor. The photoelectric switch sensor controls two sets of Solid State Relays, the wiring circuit of the sensor, relays and electromagnet allow an alternating current and therefore switching of poles. The electromagnet has a “U” shape for using both poles to be used in the reciprocating system. The circuit has an optional switch to turn off the circuit in the attraction moment, this is for saving energy when the torque required is low.