Vibration generation device, vibration reduction device, and electronic apparatus

A vibration generation device comprising:

• a base configured to transmit vibration to an object;
• a pendulum provided at the base swingably around a rotation axis;
• and
• at least one driving unit including
• a magnet that is provided at the pendulum, and
• a coil that is provided at a configuration other than the pendulum and that is disposed to face the magnet in a non-contact manner, and
• configured to apply a driving force to the pendulum, wherein
• the pendulum includes
• a tip end portion that is an end portion on an opposite side of a center of the pendulum extending from the rotation axis from the rotation axis in an extending direction in which the pendulum extends among directions intersecting with the rotation axis, and
• a first side surface portion and a second side surface portion that intersect with a direction parallel to the rotation axis and are opposite-side end portions,
• the at least one driving unit includes a first driving unit,
• the first driving unit includes
• a first magnet that is the magnet and is provided at the first side surface portion to be separated from the rotation axis, and
• a first coil that is the coil and is disposed to face the first magnet in a non-contact manner,
• the at least one driving unit includes a tip-end-side driving unit, and
• the tip-end-side driving unit includes
• a tip-end-portion-side magnet that is the magnet and is provided at the tip end portion, and
• a tip-end-portion-side coil that is the coil and is disposed to face the tip-end-portion-side magnet in a non-contact manner.

A vibration generation device comprising:

• a base configured to transmit vibration to an object;
• a pendulum provided at the base swingably around a rotation axis;
• and
• at least one driving unit including
• a magnet that is provided at the pendulum, and
• a coil that is provided at a configuration other than the pendulum and that is disposed to face the magnet in a non-contact manner, and
• configured to apply a driving force to the pendulum, wherein
• the pendulum includes
• a tip end portion that is an end portion on an opposite side of a center of the pendulum extending from the rotation axis from the rotation axis in an extending direction in which the pendulum extends among directions intersecting with the rotation axis, and
• a first side surface portion and a second side surface portion that intersect with a direction parallel to the rotation axis and are opposite-side end portions,
• the at least one driving unit includes a first driving unit,
• the first driving unit includes
• a first magnet that is the magnet and is provided at the first side surface portion to be separated from the rotation axis, and
• a first coil that is the coil and is disposed to face the first magnet in a non-contact manner,
• the pendulum includes
• a first arm extending in a first direction intersecting with the rotation axis and including the tip end portion, the first side surface portion, and the second side surface portion, and
• a second arm extending from the rotation axis toward an opposite side from the first direction,
• the at least one driving unit includes a second-arm-side driving unit, the first magnet of the first driving unit is provided at the first side surface portion of the first arm, and
• the second-arm-side driving unit includes
• a second-arm-side magnet that is the magnet and is provided at a position separated from the rotation axis at the second arm, and
• a second-arm-side coil that is the coil and is disposed to face the second-arm-side magnet in a non-contact manner.