摘要:
There are provided a tubular stator core having a plurality of tooth portions which protrude radially inwards and slots which are defined between the respective tooth portions and coils which are disposed on circumferences of the tooth portions. An insulator is attached to the stator core from an axial direction thereof for isolating the coils from the stator core. A radius of curvature of a corner portion of the insulator around which the coil is wound decreases continuously as the tooth portion extends from a root portion to a distal portion thereof.
摘要:
Provided are: an electric motor that can prevent mispositioning of a coil winding body with respect to a stator core; a pump device; and a stator. The stator (50) of the electric motor (30) has a stator core (60), a plurality of teeth (62), a coil winding body (70) having a bobbin (80), and an inner flange section (84) at the inner diameter side of the bobbin (80), and there is a first engagement section (110) at one end in the width direction of the inner flange section (84) and a second engagement section (120) at the other end in the width direction. The first engagement section (110) is provided positioned to the outside in the radial direction from the second engagement section (120) of adjacent coil winding bodies (70) in the direction of motion along the teeth (62) of the coil winding body (70) at which the first engagement section (110) is present, and the second engagement section (120) is provided positioned to the outside in the radial direction from the first engagement section (110) of adjacent coil winding bodies (70) in the direction of motion along the teeth (62) of the coil winding body (70) at which the second engagement section (120) is present.
摘要:
Protrusions 540 are provided on an outer circumferential surface of an outer circumferential wall 533 of an insulator 530. Two lead wires 521 out of three lead wires 521 of coils 520 are drawn out to an outer circumferential side of the outer circumferential wall 533 and are hooked on the protrusions 540. Thus, sway of the lead wires can be prevented without increase in number of components and troubles with work.
摘要:
A stator core is formed by deforming a core assembly having core pieces coupled in a strip form into an annular shape, and by joining both ends of the core assembly together to make a core-fastening portion. Individual phase windings are routed from one end of the core assembly toward another end. Lead portion (43v) of phase winding (40v) and lead portion (43w) of phase winding (40w) make up respective wire terminals. Lead portion (43u) of another phase winding (40u) is extended through a plural number of the core pieces in a direction of the lead portions (43v and 43w), and a wire terminal of the extended lead portion (43u) and the wire terminals of the other lead portions (43v and 43w) are electrically connected to provide a neutral point of three-phase Y-connection circuit.
摘要:
A field rotor (100) of a superconducting rotary machine, comprises a rotary shaft (10), a plurality of coil boxes (20), and a plurality of superconducting coils; wherein the coil boxes extend in a center axis direction of the rotary shaft, have walls defining spaces within the coil boxes, respectively, and are removably fastened to a peripheral surface of the rotary shaft; wherein the superconducting coils are disposed in the spaces of the coil boxes, respectively, and constitute field windings of the superconducting rotary machine.
摘要:
In a motor, one ends of a plurality of electric wires with the other ends connected to the motor side are connected to a terminal rod, and the terminal rod is exposed to the exterior of a motor casing via a terminal base. The terminal rod is provided with a flange portion and a crimping portion. A concave part is formed on an end surface of the crimping portion, and a communication part providing communication between an outer surface and the concave part is formed. The terminal base is provided with a depression to be fitted to the flange portion of the terminal rod, a seal portion having a diameter reduced from the depression, and a through portion pasting from the seal portion through to the exterior of the motor casing. A seal member is put on the terminal rod. In a state that the electric wires are inserted into the concave part of the crimping portion, the outer surface of the crimping portion is pressurized, so that the electric wires are fixed to the crimping portion. With such a configuration, it is possible to reduce electric resistance between the electric wires from the motor side and the terminal rod and strongly combine the electric wires and the terminal rod.
摘要:
A coil bobbin (3) has a body part (30), a first outer flange part (31) provided at one end of the body part (30) and a second outer flange part (32) provided at the other end of the body part (30). The first outer flange part (31) has a widthwise dimension larger than that of the second outer flange part (32). The first outer flange part (31) has leg portions (31a) at both ends in the widthwise at the lower end. The second outer flange part (32) has a leg portion (32a) at the lower end. The coil bobbin (3) is supported by the two leg portions (31a, 31a) of the first outer flange part (31) and the leg portion (32a) of the second outer flange part (32). With this arrangement, the motor coil bobbin of the invention can maintain a stable posture even if the coil part is wound thereon, and assembling workability with an iron core is improved.
摘要:
The present invention provides a linear motor that uses a plurality of cylindrical linear motors to increase power and to enable a compact configuration. A linear motor 1 includes a plurality of cylindrical linear motors 2 each having a shaft member 3 made of a permanent magnet and a coil unit 4 through which the shaft member 3 is movable relative to the coil unit 4. The plurality of cylindrical linear motors 2 are arranged in parallel adjacent to one another. An arrangement pitch between the adjacent cylindrical linear motors 2 is substantially equal to the diameter dimension D of the cylindrical linear motor 2.