Electronic pen cartridge and electronic pen

An electronic pen comprising:

• an outer electronic pen casing in which an opening is made on a first side at one end of the outer electronic pen casing in an axis center direction of the electronic pen casing;
• and
• an electronic pen cartridge housed in the outer electronic pen casing,
• wherein the electronic pen cartridge includes:
• a cartridge casing that is different from the outer electronic pen casing and is configured to be disposed within the outer electronic pen casing;
• a pen tip coupled to the cartridge casing at a first end of the cartridge casing and configured to protrude to outside of the electronic pen through the opening,
• a first electronic circuit disposed inside of the cartridge casing and which, in operation, transfers signals to a position detecting sensor, and
• a first connector that is coupled to the cartridge casing at a second end of the cartridge casing opposite the first end of the cartridge casing, that is electrically connected to the first electronic circuit, and that is joined to a second connector that is electrically connected to a second electronic circuit disposed inside of the outer electronic pen casing on a second side of the outer electronic pen casing,
• wherein the first connector includes plural first terminals insulated from each other, and each of the plural first terminals is electrically connected to the first electronic circuit,
• wherein the outer electronic pen casing includes:
• the second connector, the second connector including plural second terminals insulated from each other,
• the second electronic circuit, the second electronic circuit being electrically connected to the plural second terminals of the second connector, and
• a power supply that provides a supply voltage to the second electronic circuit, and
• wherein the first connector and the second connector are joined through insertion of a fitting protrusion of a first one of the first connector and the second connector into a fitting recess of a second one of the first connector and the second connector in the axis center direction of the outer electronic pen casing, and the plural first terminals or the plural second terminals include circular annular conductor contacts.