Vibration generating device

Abstract

[Problem] To obtain a powerful driving force using hollow coils and magnets. [Solution] A fixed body having at least three hollow coils; and a movable body having a magnet and configured to vibrate against the fixed body; the hollow coils having a pair of bundled sections arranged in parallel; the magnets being arranged facing the hollow coils; in a neutral position where the movable body is not vibrating, the magnets are arranged such that the first magnetic pole of the magnet faces the bundled section of one end of the hollow coil among the at least three hollow coils, and the second magnetic pole of the magnet faces the bundled section of the other end of the hollow coil and the adjacent hollow coil; the hollow coils are composed of a plurality of winding layers, and the cross-sections of the layers crossing one inner side are gathered and arranged at one of the bundled sections constituting the hollow coil, thereby making the other of the pair of bundled sections a narrow section, and arranging the narrow sections of two adjacent hollow coils adjacent to each other.

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