| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electromechanical transducer which widens a selection range of a dimension or a material for the design of an armature, is small-sized, improves output and has satisfactory impact resistance.SOLUTION: An electromechanical transducer includes: a structure unit in which at least a pair of magnets (15-18), yokes (12 and 13) for guiding magnetic fluxes generated by the magnets and a coil (14) to which an electric signal is supplied, are integrally disposed; an armature (19) including an inside part penetrating an internal space of the structure unit and outside parts protruding to both sides in an X direction, forming a magnetic circuit with the structure unit via a gap to which the magnetic fluxes are guided at both sides of the inside part, and being displaced in a Z direction by a magnetic force of the magnetic circuit; and a pair of resilient mechanisms (20 and 21) disposed oppositely in the Z direction while interposing the armature therebetween and apply resilience to the outside parts in accordance with the displacement of the armature. Engaging parts at both sides in each of the resilient mechanisms are engaged with the outside parts, the resilient mechanism is fixed to the structure unit by a fixing part between the engaging parts, and a distance between each engaging part and the fixing part in the X direction is longer than a half of a length of the structure unit in a Y direction.</p> |
