Abstract: A connection device includes: a pedestal having a placement face; a connector provided in the placement face of the pedestal; a support provided adjacent to the pedestal and extended in a direction crossing the placement surface of the pedestal and having a face to define a space for placing a portable terminal on the connector and on a contact face in the face of the support, the contact face being movable in a thickness direction of the support; and an elastic member that is deformed by the movement of the contact face and applies an elastic force generated by the deformation in a direction of blocking the movement of the contact face with respect to the thickness direction of the support.

Abstract: A headset comprising a body portion including a microphone section, a receiver section, a battery section and a wireless communication section, all provided in a case having a substantially flat surface, and a projecting portion projecting from the substantially flat surface, is arranged such that the ear pad of the receiver section attached to the tip of the projecting portion is inserted into the external auditory meatus. A portion coming into resilient contact with the inner wall of the cavity of the concha on the inside of a tragus and an antitragus is provided at the projecting portion closer to the body portion side than the ear pad, wherein the ear pad is of an earplug type deformable elastically to ensure a close contact with the inner wall of the external auditory meatus.

Abstract: A connection device includes: a pedestal having a placement face; a connector provided in the placement face of the pedestal; a support provided adjacent to the pedestal and extended in a direction crossing the placement surface of the pedestal and having a face to define a space for placing a portable terminal on the connector and on a contact face in the face of the support, the contact face being movable in a thickness direction of the support; and an elastic member that is deformed by the movement of the contact face and applies an elastic force generated by the deformation in a direction of blocking the movement of the contact face with respect to the thickness direction of the support.

Abstract: A headset comprising a body portion including a microphone section, a receiver section, a battery section and a wireless communication section, all provided in a case having a substantially flat surface, and a projecting portion projecting from the substantially flat surface, is arranged such that the ear pad of the receiver section attached to the tip of the projecting portion is inserted into the external auditory meatus. A portion coming into resilient contact with the inner wall of the cavity of the concha on the inside of a tragus and an antitragus is provided at the projecting portion closer to the body portion side than the ear pad, wherein the ear pad is of an earplug type deformable elastically to ensure a close contact with the inner wall of the external auditory meatus.