Air pump device and seat apparatus

An air pump device comprising:

• an electric pump unit including a pump mechanism and a motor configured to drive the pump mechanism;
• a case housing the electric pump unit;
• and
• a vibration-proof member interposed between the electric pump unit and the case, wherein
• the vibration-proof member is made of an elastic resin material and is wound around the electric pump unit to wrap the electric pump unit therein,
• a part of the vibration-proof member is sandwiched between the electric pump unit and one of a plurality of facing surfaces that are inner surfaces of the case and face each other inside the case,
• another part of the vibration-proof member is sandwiched between the electric pump unit and an other one of the plurality of facing surfaces,
• the case has a divided structure including a first divided case and a second divided case,
• the vibration-proof member includes a sandwiched portion extending in a joint portion of the first divided case and the second divided case and interposed between the first divided case and the second divided case,
• the case has a structure in which the first divided case and the second divided case are joined to each other through engagement between a locking piece protruding from one of the first divided case and the second divided case and a locked portion provided on an outer surface of the other one of the first divided case and the second divided case, and
• the sandwiched portion of the vibration-proof member has a through hole through which the locking piece is inserted.