Electronic pen and electronic pen main unit

Abstract

An electronic pen main unit is configured as a replaceable cartridge fitted to a fitting part positioned in a casing of an electronic pen. The electronic pen main unit includes: a pen tip part including an electrically-conductive core body configured to protrude externally from the casing; a main body tubular part to which the pen tip part is joined on the pen tip side in the axial center direction, the main body tubular part housing an electronic circuit including a signal generating circuit configured to generate a signal to be transmitted by the core body; and a rear-end-part connector that is positioned at a rear end part of the main body tubular part. The rear-end-part connector includes a plurality of terminals arranged at a plurality of different locations along the axial center direction of the replaceable cartridge and electrically insulated from each other and electrically connected to the electronic circuit.