A connector mechanism includes: a first connector that is arranged on a first substrate; a second connector that is arranged on a second substrate and is connected to the first connector in a positional relationship in which the second substrate and the first substrate face each other; and a packing including: a first face that elastically abuts against the first substrate; a second face that is a face on an opposite side to the first face and that elastically abuts against the second substrate; and connector abutting convex portions that are protrusively provided with respect to an inner face of a connector space that is a through-hole which allows the first face and the second face to communicate and sealingly houses the connectors in a connected state, and that elastically abut against an outer face of the connectors disposed in the connector space and are disposed integrally with the connectors.