Patent ID: 11874976
Assignee: WACOM CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. An electronic pen main unit that is configured as a replaceable cartridge to be fitted to a fitting part positioned in a casing of an electronic pen in which a pen tip side that is one end side of the electronic pen in an axial center direction includes an opening, and configured to be housed in a state of being movable in a hollow part of the casing by a movement mechanism that moves the fitting part in the axial center direction, the electronic pen main unit comprising:
a pen tip part including an electrically-conductive core body configured to protrude externally from the casing through the opening by being moved by the movement mechanism;
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 on a side opposite from the pen tip part in the axial center direction, includes a plurality of annular 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, and is configured to be joined to a joining connector positioned at the fitting part, wherein the joining connector includes a plurality of contact terminals,
wherein the plurality of annular terminals are configured to be electrically coupled to the plurality of contact terminals when the replaceable cartridge is received in the casing and the rear-end-part connector is joined to the joining connector, and at least one of the plurality of annular terminals is a power-supply annular terminal configured to be electrically coupled to one of the contact terminals to supply power from a power source to the electronic circuit of the replaceable cartridge.