| 摘要 |
The object of the invention is an electromagnetic drive comprising a core composed of at least two partially open sections. Each section partially surrounds the winding and is being closed by a closing element moveably connected to the core. This element is arranged so that in conditions of no current flow through the winding the core is partially not closed. The closing elements are arranged outside of the core and the winding and are connected to each other by a separating element made of material having lower magnetic permeability. The object of the invention is also a winding core composed of at least two partially open sections arranged along the axis of the core, characterized in that the openings of the core's sections are located in its substantially outer portion. Preferably, the core has axial symmetry and is equipped with a groove between sections adapted to accommodate the wire connecting the windings. Preferably, the separation of adjacent sections of the core corresponds to the length of a section. Furthermore, the object of the invention is a method of producing of electromagnetic drive comprising a partially open core, a winding and a moveable portion of the core, wherein the core is produced of at least two partially open sections, grooves adapted to accommodate the wire of the winding between sections are provided therein. The winding is wound in a continuous manner, with a single piece of wire, guiding the wire between sections in the grooves. The core is surrounded by a moveable hammer made of alternately arranged closing elements made of material having a high magnetic permeability and separating elements made of material having lower magnetic permeability, wherein the hammer is mounted to the core by means of means adapted to energy storing, so that in conditions of no current flow through winding the open sections of the core are only partially closed by the closing elements. |
