초록 ▼

In line DC motor with a permanent magnet arrangement displaying a ferromagnetic ground and a multi-strand winding, which are linearly moveable with respect to one another, in particular for drives in data engineering. The winding consists of several coils following one another in the direction of mo

In line DC motor with a permanent magnet arrangement displaying a ferromagnetic ground and a multi-strand winding, which are linearly moveable with respect to one another, in particular for drives in data engineering. The winding consists of several coils following one another in the direction of movement, activatable with current in cyclic sequence, which in each case are layed without overlap around a pole of at least one grooved flow guidance part which together with the permanent magnet arrangement forms an essentially even air gap, with coil axis standing perpendicular to the direction of movement. The ratio of coil interval to magnet interval amounts to 2:3. To make interfering reluctance forces ineffective, in the vicinity of the sides of the end poles lying in the direction of movement, ferromagnetic auxilliary poles are provided.

대표청구항 ▼

A direct current linear motor, particularly for use in data processing drive systems, said motor comprising: a permanent magnetic system formed of a plurality of permanent magnet poles disposed linearly adjacent each other; a ferromagnetic structure formed of at least one slotted flux-carrying membe

A direct current linear motor, particularly for use in data processing drive systems, said motor comprising: a permanent magnetic system formed of a plurality of permanent magnet poles disposed linearly adjacent each other; a ferromagnetic structure formed of at least one slotted flux-carrying member and a multi-strand winding formed into a plurality of coils, the coils disposed linearly adjacent each other on the flux-carrying member, the coils being energized in cyclic sequence and each said coil wound without overlap around a pole of the at least one flux-carrying member between adjacent slots thereof forming a multi-phase d.c. structure, each pole terminating in a shoe at one of its ends; a flat air gap defined between and separating said permanent magnetic system and the pole shoes of said ferromagnetic structure, said permanent magnetic system and said ferromagnetic structure being linearly movable relative to each other in their longitudinal direction, the axis of each said coil of said ferromagnetic structure extending perpendicular to the direction of movement; and an auxiliary ferromagnetic pole at each end of said ferromagnetic structure with respect to the direction of movement thereof to substantially reduce or eliminate reluctance forces tending to impede relative movement between said permanent magnetic system and said ferromagnetic structure, said auxiliary ferromagnetic pole being formed by an additional pole separate from the winding poles at each end of said ferromagnetic structure, the auxiliary poles being formed from outwardly extending bent ends of a U-shaped ferromagnetic part that provides said additional poles, and the upward bend height of the auxiliary poles being 0.1-0.5 times and preferably about 0.2 times the intercoil pitch of the ferromagnetic structure.