VOICE COIL MOTOR AND THREE PHASE LINEAR MOTOR WITH SADDLE-TYPE COIL CONTAINED IN COOLING CELL

摘要

PURPOSE: A voice coil motor and three phase linear motor are provided to prevent expansion of a cooling cell due to a pressure difference between inner and outer portions of the cooling cell by containing a saddle-type coil in the cooling cell. CONSTITUTION: A voice coil motor includes a pair of permanent magnets(11) implemented to be apart from each other by a space where a coil is to be implemented. Polarities of adjacent magnets are different from each other. The coil includes two saddle-type coils(50). The saddle-type coil includes short and long side portions which have an angle of substantially 90 degrees between them at a contact node. The saddle-type coils are assembled such that two contact nodes of the saddle-type coils are placed in opposite directions. Two straight lines between two contact nodes of one saddle-type coil is placed near to two straight lines between two contact nodes of the other saddle-type coil.