Resonant vibration actuator

A resonant vibration actuator, comprising:

• a casing, a mover, a plurality of electromagnet sets, two elastic suspensions, and a connection circuit;
• the casing further comprising:
• a bottom and an upper cover, the upper cover able to cover and be combined with the bottom to form a rectangular box, and one or more connection terminals being disposed outside the casing for electrically connecting to an external circuit;
• the mover further comprising:
• a mover frame, a plurality of permanent magnet units, and two magnetic backs, the two magnetic backs being respectively disposed on opposite sides of the mover frame, and the plurality of permanent magnet units being arranged side by side and adjacent to the two magnetic backs;
• each electromagnet set further comprising:
• a magnetic core, two conductive bobbin flanges, and a coil, the two conductive bobbin flanges being respectively located at two ends of the magnetic core, and forming a bobbin together with the magnetic core, the coil being wound on the bobbin, the electromagnet set being arranged between two permanent magnet units of the mover, and forming an electromagnetic driving portion with the two permanent magnet units and the magnetic backs;
• each elastic suspension further comprising:
• two connection portions and a connection block, the two connection portions being respectively located at two ends of the elastic suspension, with one connection portions fixed to the casing by the connection block, and the other connection portion connected to the mover;
• the connection circuit being used to connect the coil of the electromagnet set and the one or more connection terminals outside the casing;
• wherein a first direction is defined as being parallel to the magnetic core, a second direction is defined as being perpendicular to the first direction and parallel to the bottom, and a third direction is defined as being perpendicular to the first and second directions;
• the electromagnetic driving portion uses magnetic force to drive the mover along the second direction and the third direction;
• the elastic suspension is connected to the casing and supports the mover in the casing, so that the mover moving along the second direction and the third direction vibrates within the enclosure;
• wherein, a middle portion of the elastic suspension along the first direction has an L-shaped feature extending both ways in the third direction and bending outward toward the second direction, and a hole in the third direction, the L-shaped feature remains connected to the elastic suspension;
• and a side of the elastic suspension perpendicular to the second direction has a hole, not exceeding the elastic suspension in the third direction and the first direction;
• and
• each permanent magnet unit being a plate magnet with a cuboid shape;
• a largest rectangular surface of the permanent magnet unit being a magnetization surface, and each permanent magnet unit being divided into two magnetization regions by one of two diagonal lines of the magnetization surface, and the two magnetization regions being magnetized to mutually different polarities.