Abstract: A rotary connector for electrically connecting a set of headphones to a portable personal audio device to help prevent stress on the electrical wires of the set of headphones. The rotary connector includes a substantially hemispherical jack socket defining a substantially hemispherical jack space. The outer surface of the jack socket has an annular primary contact therearound. The inner surface of the jack socket has a secondary and tertiary contacts. A resiliently deflectable top cup defines an upper space and has an interior surface with an annular first contact therearound. The top cup has an axial extent outwardly extending from the exterior surface of the top cup with an axial bore extending between the interior and exterior surfaces of the top cup. A generally spherical plug has an outwardly extending axial shaft which inserted into the axial bore of the top cup.

Abstract: A motor comprises a rotary shaft, an oil impregnated sintered bearing rotatably supporting the rotary shaft, a bearing holder supporting the oil impregnated sintered bearing and a motor case. A lateral pressure device is provided to the rotary shaft which abrasively contacts the rotary shaft from a radial direction and provides a lateral pressure so that the rotary shaft is displaced in the radial direction. The lateral pressure device further comprises an inner ring made of an oil impregnated sintered member in which a through-hole abrasively contacts the rotary shaft from the radial direction is formed, an elastic member which provides a lateral pressure so that the rotary shaft is displaced in the radial direction and an outer ring which holds the elastic member and is fixed to the motor case.