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 supported by the base swingably around a rotation axis;
• wherein
• the pendulum includes an arm supported by a support portion in the base;
• the support portion supports the pendulum and the arm swingably around the rotation axis;
• and
• the support portion includes a portion overlapping with the arm in a swingable range of the arm when viewed from an extending direction of the arm from the rotation axis;
• and
• a driving unit including
• a magnet, and
• a coil disposed to face the magnet in a non-contact manner, and configured to swing the pendulum, wherein
• a first member of the magnet and the coil is provided at a position on the pendulum away from the rotation axis, and
• the base includes
• an avoidance portion, configured to avoid contact with an opposite-side free end of the pendulum from the rotation axis when the pendulum swings, on the free end side.

A vibration generation device comprising:

• a base configured to transmit vibration to an object;
• a pendulum supported by the base swingably around a rotation axis;
• wherein
• the pendulum includes an arm supported by a support portion in the base;
• the support portion supports the pendulum and the arm swingably around the rotation axis;
• and
• the support portion includes a portion overlapping with the arm in a swingable range of the arm when viewed from an extending direction of the arm from the rotation axis;
• and
• a driving unit including
• a magnet, and
• a coil disposed to face the magnet in a non-contact manner, and configured to swing the pendulum, wherein
• the base includes a support portion supporting the pendulum,
• a first member of the magnet and the coil is provided at a tip end portion of the pendulum in an extending direction of the pendulum from the rotation axis,
• the tip end portion is located outside the support portion when viewed from a position facing the support portion, and
• an end portion of the support portion and a second member of the magnet and the coil are spaced apart from each other.

A vibration generation device comprising:

• a base configured to transmit vibration to an object;
• a pendulum supported by the base swingably around a rotation axis;
• wherein
• the pendulum includes an arm supported by a support portion in the base;
• the support portion supports the pendulum and the arm swingably around the rotation axis;
• and
• the support portion includes a portion overlapping with the arm in a swingable range of the arm when viewed from an extending direction of the arm from the rotation axis;
• and
• a driving unit including
• a magnet, and
• a coil disposed to face the magnet in a non-contact manner, and configured to swing the pendulum, wherein
• one of the magnet and the coil is provided at a position on the pendulum away from the rotation axis,
• the pendulum extends to an outside of the support portion when viewed from a position facing the support portion, and
• an opposite-side free end of the pendulum from the rotation axis is disposed at a position not overlapping with the base when viewed from the position facing the support portion.