Linear oscillatory actuator

A linear oscillatory actuator comprising:

• a magnetic pole forming portion that includes an electromagnet capable of generating different polarities alternately when activated and a base on which the electromagnet is fixed;
• at least two magnetic blocks each of which is disposed oppositely to the magnetic pole forming portion and includes a magnet to be attracted or repelled by a polarity generated at the magnetic pole forming portion, and reciprocates relatively to the magnetic pole forming portion;
• at least two elastic suspensions that support the magnetic blocks reciprocatably, respectively;
• and
• at least one coupling spring portion that couples the magnetic blocks reciprocatably, wherein
• each of the elastic suspensions includes upper extending portions connected with both sides of each of the magnetic blocks, respectively, lower extending portions connected with both sides of the base of the magnetic pole forming portion, respectively, and elastic planar portions that are integrally provided between the upper extending portions and the lower extending portions, respectively, and
• depressed portions are formed at continuous portions between the upper extending portions and the elastic planar portions, respectively, and each of the depressed portions is depressed toward each of the magnetic blocks.