Patent ID: 8567818

Claim:
A vibration damping structure for a steering wheel using a dynamic damper, the vibration damping structure comprising: an airbag mounted in the steering wheel; an inflator arranged forward of the airbag, wherein the inflator has a peripheral wall portion and a plurality of gas ports formed in the peripheral wall portion, the inflator discharges gas from the gas ports outward in a radial direction of the peripheral wall portion to inflate the airbag rearward, and the inflator functions as a damper mass in the dynamic damper; a support member having an elastic support portion for elastically supporting the inflator at a position forward of the inflator, wherein the support member has a communication hole formed at a position facing the inflator, and the elastic support portion functions as a spring in the dynamic damper; and a sealing portion formed in at least one of the inflator and the support member to surround the communication hole, wherein the inflator contacts the support member at the sealing portion so that gas leakage via the communication hole is prevented, wherein a pressure receiving portion is joined integrally with the inflator at a position close to the gas ports of the inflator, and the pressure receiving portion changes a flow direction of the gas discharged outward from the gas ports in the radial direction of the peripheral wall portion to a direction toward a rear side and to produce force acting forward by receiving pressure from the gas.