A stepping exerciser includes a base frame having a first end portion, a second end portion, a first side wall, and a second side wall. A supporting handle has a lower end portion mounted on the first end portion of the base frame, and an upper end portion with a handgrip. A driving axle is rotatably mounted on the second end portion of the base frame and has a first end and a second end extending through the first and the second side wall of the base frame respectively. A first stepping member ...

A stepping motor for optical pick-up devices is disclosed. In the stepping motor, a stator, having a coil and a yoke, is fixed to a first support plate. A rotating shaft is rotated by the coil of the stator, with a first end of the shaft being inserted into the stator and a second end being exposed outside the stator and being externally threaded to form a lead screw. The first and second ends are each domed. A first holder, having a trapezoidal dent, rotatably holds the domed first end of the s...

A stepping exerciser includes a base frame having a first end portion, a second end portion, a first side wall, and a second side wall. A supporting handle has a lower end portion mounted on the first end portion of the base frame, and an upper end portion with a handgrip. A driving axle is rotatably mounted on the second end portion of the base frame and has a first end and a second end extending through the first and the second side wall of the base frame respectively. A first stepping plate i...

A stepping motor wherein a following formula is satisfied: where W.sub.s2 is a tooth width of magnetic pole of a stator, x.sub.2 is an interval of adjacent magnetic poles of the stator, W.sub.r2 is a tooth width of pole tooth or a rotor, y.sub.2 is an interval of adjacent pole teeth of the rotor, and n is an integer not less than 2.

A device for aerobic step exercises comprising a platform with a flat top, the underside of the platform having a cavity into which either the first or second end of a support member is inserted. Each end has an opening therein or a slot therethrough of a certain depth which contacts engaging means within the cavity to maintain the top of the platform at a certain pre-selected height above the support surface. A respective numeral corresponding to the height is disposed on the support member adj...

A stepping motor comprises a rotor, a stator, coils for magnetizing the stator, and a controller for controlling the excitation of the coils to control the rotation of the rotor. The rotor is cylindrical and has a multiplicity of alternately arranged north and south poles. The stator has a plurality of stator teeth arranged about the rotor. The controller is arranged to rotate the rotor a predetermined amount to a selected stop position and then determine whether to maintain the excitation of th...

It is a stepping motor enabled to prevent generation of detent torque therein and arbitrarily set the detent torque. This stepping motor has a rotor constructed by rotatably supporting a shaft, to which a multi-polarized permanent magnet (3) is fixed, and a stator consisting of a plurality of air-core coils (4, 5), each of which is made from a predetermined number of turns of a wire wound around an axis perpendicular to a central axis of rotation of the rotor, to be placed along a peripheral sur...

There is provided a stepping motor of low vibration realized by reducing cogging with a simple structure while maintaining the performances such as torque. A stepping motor of the invention is structured such that a stator unit 18 is composed of a pair of stator sub-assemblies 5, 5 attached to each other in a back to back manner, each stator sub-assembly having a plurality of pole teeth 13 formed at its inner circumference and housing a coil inside thereof, a rotor unit 19 is rotatably disposed ...

A stepping motor includes a pair of drive coils arranged to sandwich a magnetic rotor in the axial direction of a rotor shaft in order to decrease the motor size. The drive coils are configured to be annular around the rotor shaft that extends in both directions from the magnetic rotor. A pair of cylindrical yokes are provided to enclose the drive coils. A pair of sintered bearings that support the rotational movement of the rotor shaft are made of a magnetic material, and the cylindrical yokes ...

A stepping motor including a rotor (1) having a permanent magnet 1b and magnetized in multipoles, a plurality of coils (2) arranged at a surrounding of the rotor (1) and wound around a radius direction of the rotor (1), a supporter (3) in a cylindrical shape for supporting the coils (2), and a casing (4) for surrounding the permanent magnet (1b), the coils (2) and the supporter (3) and fixed with the supporter (3), characterized in that the supporter (3) comprises an insulating film having a fle...