Abstract: This vibration actuator comprises a fixed body including a coil, a movable body including a magnet, and an elastic support part that supports the movable body so as to be freely moveable with respect to the fixed body. The elastic support part has an outer circumferential part fixed to the fixed body, an inner circumferential part disposed inside in the radial direction of the outer circumferential part and fixed to the movable body, and a deforming arm part disposed between the outer circumferential part and the inner circumferential part and coupling the outer circumferential part and the inner circumferential part, the deforming arm part being elastically deformable. An attenuation part is provided across the outer circumferential part and a portion of the deforming arm part on an outer circumferential part side thereof, the attenuation part attenuating vibrations in the elastic support part when the movable body moves.

Abstract: This vibration actuator comprises a fixed body including a coil, a movable body including a magnet, and an elastic support part that supports the movable body so as to be freely moveable with respect to the fixed body, wherein the coil to which power is supplied and the magnet cooperate to cause the movable body to vibrate with respect to the fixed body. The elastic support part has an outer circumferential part bonded to the fixed body, an annular inner circumferential part disposed inside in the radial direction of the outer circumferential part and bonded to the movable body, and a deforming arm part that couples the outer circumferential part and the inner circumferential part and is elastically deformable. The elastic support part has a sealing part provided in a bonding part between the inner circumferential part and the movable body to seal the bonding part.

Abstract: A vibration actuator includes: a movable body having: a disk-shaped magnet; a pair of magnetic parts fixed to both surfaces of the magnet; and a pair of spring stopper parts connected to the magnetic parts; a pair of elastic support parts connected to the spring stopper parts and configured to support the movable body; a fixing body configured to connect to the elastic support parts with a protection wall portion, a pair of annular coils and a magnetic shield disposed in this order at an outer circumferential side, and accommodate the movable body such that the movable body is capable of reciprocally vibrating in an axial direction; and a cylindrical resin case having, on a circumferential wall portion, an opening portion for wires for supplying power to the coils and configured to close upper and lower faces of the circumferential wall portion and accommodate the fixing body.

Abstract: A fixing body includes a coil holding part that is disposed to surround a magnet externally in a radial direction and holds the coil disposed outside the bobbin-shaped coil holding part in the radial direction. The coil holding part includes a coil protection wall portion that is disposed inside the coil in the radial direction of the coil with a gap being interposed between the coil protection wall portion and the magnet, and inhibits contact between the coil and the movable body. Elastic supporting parts are a plurality of leaf springs installed between the fixing body and the movable body to sandwich the movable body in the vibration direction, and support the movable body such that, in a non-vibration state and in a vibration state of the movable body, the movable body is freely movable in the vibration direction without making contact with the coil holding part.

Abstract: A vibration actuator includes: a fixing body including a hollow case and a coil, a movable body that includes a magnet, and an elastic supporting part that supports the movable body such that the movable body is freely movable with respect to the fixing body in the hollow case. The hollow case restricts a movement range of the movable body in the case by opposite end surface portions that are disposed to face each other at a distance from each other in the vibration direction of the movable body, the hollow case includes one or more vent holes, and the vent holes are disposed in a portion of at least one end surface portion of the opposite end surface portions, the portion being free from interference by the movable body.

Abstract: A fixing body includes a coil holding part that is disposed to surround a magnet externally in a radial direction and holds the coil disposed outside the bobbin-shaped coil holding part in the radial direction. The coil holding part includes a coil protection wall portion that is disposed inside the coil in the radial direction of the coil with a gap being interposed between the coil protection wall portion and the magnet, and inhibits contact between the coil and the movable body. Elastic supporting parts are a plurality of leaf springs installed between the fixing body and the movable body to sandwich the movable body in the vibration direction, and support the movable body such that, in a non-vibration state and in a vibration state of the movable body, the movable body is freely movable in the vibration direction without making contact with the coil holding part.