Abstract: The present invention relates to a multipolar electrical jack (multipolar jack) which uses a multipolar electrical plug (multipolar plug) as a counter electrical connector. According to the present invention, even when a jack is of a multipolar type, the length of the jack can be shortened. The multipolar jack of the present invention is useful as a multipolar electrical connector to be used where space for insertion and ejection of the jack is required to be as small as possible, such as the case of an audio apparatus and a car navigation apparatus mounted on an automobile. In the multipolar jack of the present invention, a body is provided with an annular recess and a center recess positioned at the center of the annular recess of the body. Three poles are separately disposed on the annular recess of the body and the center recess, respectively. The poles are disposed in a distributed manner on the inner and outer peripheral faces of the annular recess of the body.

Abstract: A multipolar electrical plug (multipolar plug) which uses a multipolar electrical jack (multipolar jack) as a counter electrical connector so that, even when a plug is of a multipolar type, the length of the plug can be shortened. In addition, it is possible to enhance resistance to deformation and resistance to breakage of the pole portion. The multipolar plug is useful as a multipolar electrical connector to be used in the case where a space for insertion and ejection is required to be as small as possible, such as the case of an audio apparatus and a car navigation apparatus mounted on an automobile. The multipolar plug has the body, a pin pole protruding from the body, a plurality of sleeve poles which are respectively formed of a plurality of cylinders disposed in a coaxial manner with respect to the pin pole, and which protrude from the body. It is preferable to locate the front end position of the pin pole at a position which is recessed from the front end positions of the sleeve poles.