Vibration generating device with movable case including magnets and disposed inside stationary case

A vibration generating device comprising:

• a fixed case;
• a movable body disposed inside the fixed case;
• a support member configured to support the movable body with respect to the fixed case such that the movable body is configured to vibrate along a first direction;
• and
• a coil attached to the fixed case,
• wherein the movable body includes a magnetic field generator configured to generate a magnetic field along a second direction perpendicular to the first direction, and a movable case configured to accommodate the magnetic field generator,
• wherein a plurality of magnetic members including a permanent magnet constitute the magnetic field generator,
• wherein the plurality of magnetic members are accommodated in the movable case such that the plurality of magnetic members are stacked in the first direction and are not movable relative to each other,
• wherein a plurality of movable case members separable in the first direction constitute the movable case,
• wherein one magnetic member among the plurality of magnetic members is a solid permanent magnet having a cylinder shape or a disk shape,
• wherein the movable case includes a first movable case member and a second movable case member,
• wherein the second movable case member includes a bottom, a tube extending along the first direction from an outer edge of the bottom, and an opening edge formed at an end of the tube, and
• wherein the first movable case member includes a cover attached to the opening edge of the second movable case member.