73 results about "Reciprocating electric motor" patented technology

A toroidal-coil multi-phase linear stepping motor includes a cylindrical housing, an axis coaxially arranged inside the housing, a cylindrical element supported by the axis and an armature fixed to the housing around the cylindrical element through an air gap in the radial direction. The axis is fixed to the housing and the cylindrical element linearly moves along the axis. The cylindrical element has toroidal permanent magnets that are alternately magnetized in N pole and S pole in the axial direction. The armature consists of armature units arranged around the axis. Each armature unit has a toroidal coil and a pair of armature yokes that hold the toroidal coil. Each armature yoke has toroidal magnetic teeth on its inner surface. The invention also includes a toroidal-coil single-phase linear reciprocating motor and a cylinder compressor and a cylinder pump using these motors.

A structure for a stator of a reciprocating motor is capable of heightening an efficiency and a reliability of a motor by maximizing the area of a magnetic path at which a flux flows without increasing the whole volume of a reciprocating motor so that the flux, which is to be increased as an overload works on the motor, flows smoothly to thereby restrain generation of a core saturation. The stator structure includes a stator having a hollow cylindrical outer core and an inner core inserted into the outer core and formed as a plurality of mutually coupled hollow cylindrical stacked bodies and a winding coil connected into the outer core and an armature having a permanent magnet attached at one side thereof and movably inserted between the outer core and the inner core.

A magnetically actuated reciprocating motor utilizes the stored energy of rare earth magnets and an electromagnetic field provided by a solenoid to reciprocally drive a solenoid assembly. A converting mechanism, such as a connecting rod and crankshaft, converts the reciprocating motion of the solenoid assembly to power a work object. The solenoid assembly comprises a solenoid having a nonferromagnetic spool with a tubular center section and a coil of wire wrapped around the center section. A magnetic actuator has a permanent magnet at each end of an elongated shaft that is received through the center section of the spool. A switching mechanism switches magnetic polarity at the ends of the solenoid so the solenoid assembly is alternatively repelled and attracted by the permanent magnets. A controlling mechanism interconnecting an output shaft and the switching mechanism provides the timing to switch the polarity of the solenoid and reciprocate the solenoid assembly.

A magnetically actuated reciprocating motor utilizes the stored energy of permanent magnets and an electromagnetic field to reciprocally drive a magnetic actuator. A converting mechanism converts the reciprocating motion of the magnetic actuator to rotary motion for powering a work object. A solenoid, comprising a nonferromagnetic spool having a tubular center section with a coil of wire wrapped around the center section, is connected to a source of power and a switching mechanism. The magnetic actuator has permanent magnets disposed inside a tubular shaft at each end thereof. The switching mechanism switches the magnetic polarity at the ends of the solenoid to alternatively repel and attract the permanent magnets. The shaft is reciprocatively received through the center section of the solenoid. A controlling mechanism interconnects an output shaft, rotatably powered by the magnetic actuator, and the switching mechanism to switch the polarity of the solenoid to drive the magnetic actuator.

A stator of a reciprocal motor includes a bobbin of insulating material with a coil wound thereon, a terminal unit formed integrally with the bobbin to connect the coil to an external power source, a first lamination core in which a plurality of lamination sheets of a predetermined form are stacked radially along the bobbin, and a second lamination core in which a plurality of lamination sheets formed to have a certain width and length and located symmetrically on the central line in the direction of the length, are coupled with the inner side or outer side of the first lamination core. Therefore the present invention makes the laminating operation simple and convenient by laminating the plurality of lamination sheets composing the laminate core without sorting the lamination sheets in a certain direction during the production of the lamination core thus to improve assembly productivity and mass productivity.

A non-reciprocating motor adapted for driving a reciprocating load is assembled by selecting a housing, a first bearing, a second bearing, and a rotor assembly having a shaft, all having corresponding predetermined coefficients of thermal expansion. The first and second bearings are positioned in the housing. The rotor assembly is rotatably mounted in the housing with the shaft received in the first and second bearings, such that the rotor is in a first position in which it has a predetermined amount of axial and radial play relative to the housing. A biasing element is installed and forces the rotor assembly to a second position in which play is eliminated. Each race is then permanently secured such that the rotor assembly is retained in the second position over a temperature range of about minus 40 degrees to about 105 degrees Celsius.