Abstract: Provided is a steering wheel including a dynamic damper mechanism which does not easily deteriorate over time, in which a resonance frequency to be damped does not easily change. An attaching structure for attaching an airbag device to a steering wheel incudes: a tubular guide member (51) passing through an opening of a fixing plate (25) of the airbag device; a hook (70, 80) engaging with a lock spring (53); a hollow holding member (67) fixed to a main body part (110) of the steering wheel and holding a base end portion (71) of the hook while restricting the base end portion (71) from moving toward a tip end portion (75) of the hook; and a return spring (61), and the base end portion (71) has a bottom portion being a convex spherical shape.

Abstract: Provided is a steering wheel including a dynamic damper mechanism which does not easily deteriorate over time, in which a resonance frequency to be damped does not easily change. A attaching structure for attaching an airbag device to a steering wheel incudes: a tubular guide member (51) passing through an opening of a fixing plate (25) of the airbag device; a hook (70, 80) engaging with a lock spring (53); a hollow holding member (67) fixed to a main body part (110) of the steering wheel and holding a base end portion (71) of the hook while restricting the base end portion (71) from moving toward a tip end portion (75) of the hook; and a return spring (61), and the base end portion (71) has a bottom portion being a convex spherical shape.

Abstract: In a switch device, such as a horn switch device attached to a steering wheel, a water column is prevented from being formed between contact sections of a pair of contact points facing each other. A movable member (30) and a fixed member (40) of a horn switch device (20) are disposed in an opposed manner such that the movable member (30) on an upper side can be moved toward and away from the fixed member (40) on a lower side and such that it is urged upward by urging means (50). Furthermore, at least a pair of protruding contact points (35) and (45) are formed on the movable member (30) and the fixed member (40), at positions facing each other. By bringing them into contact with each other, the members (30) and (40) are electrically connected, closing a horn circuit.