Vibration generator having swing unit, frame and elastic member

A vibration generator comprising:

• a frame;
• a swing unit disposed within said frame and for holding a magnet;
• a coil disposed so as to face toward said swing unit;
• and
• an elastic member connecting said swing unit and said frame,
• wherein:
• said swing unit has a plate shape parallel to a horizontal plane,
• said coil has a flat plate shape,
• a largest surface of said coil is disposed facing a largest surface of said swing unit,
• said swing unit is movable with respect to said frame while deforming said elastic member,
• said swing unit reciprocates in a direction substantially parallel to said horizontal plane in response to excitation of said coil, and
• said frame, said swing unit, and said elastic member are integrally molded with each other,
• said elastic member is formed using a resin,
• said swing unit includes a plurality of grooves used as a gate when injecting the resin for forming said elastic member,
• at least one groove of said plurality of grooves is used as a joint connecting said swing unit to said elastic member,
• said plurality of grooves are provided on a weight portion of said swing unit, said weight portion being a portion that is oriented in a manner so as to hold said magnet and a back yoke portion of said swing unit together,
• said weight portion includes a plurality of cutout portions, each of said cutout portions having at least one of said plurality of grooves disposed therein.