Electronic pen central rod and electronic pen main body part

An electronic pen central rod, comprising:

• a front-end member configured as a rod-like body having a pen tip part and a back-end extension part that extends from a back-end face of the pen tip part in an opposite direction from the pen tip part;
• and
• a connection member configured as a rod-like body having two end sides, one of the two end sides being provided with a front-end hole part into which the back-end extension part of the front-end member is inserted, the other end side being provided with an attachment part to be detachably attached to an electronic pen interior,
• wherein an engagement portion between the back-end extension part of the front-end member and the connection member is provided with a front-end holding part that detachably holds the inserted back-end extension part of the front-end member with a predetermined level of holding strength.

An electronic pen main body part, comprising:

• a cylindrical housing;
• a central rod configured such that a tip of the central rod is allowed to project from one opening of the cylindrical housing;
• and
• a writing pressure detection part disposed in the cylindrical housing and configured to detect writing pressure applied to the central rod,
• wherein the central rod includes
• a front-end member configured as a rod-like body having a pen tip part and a back-end extension part that extends from a back-end face of the pen tip part in an opposite direction from the pen tip part,
• a back-end member configured as a rod-like body having an attachment part to be detachably attached to an electronic pen interior, and a front-end extension part that extends from a front-end face of the attachment part in an opposite direction from the attachment part, and
• a connection member configured as a rod-like body having two end sides, one of the two end sides being provided with a front-end hole part into which the back-end extension part of the front-end member is inserted, the other end side being provided with a back-end hole part into which the front-end extension part of the back-end member is inserted,
• an engagement portion between the back-end extension part of the front-end member and the connection member is provided with a front-end holding part that detachably holds the inserted back-end extension part of the front-end member with a first level of holding strength,
• an engagement portion between the front-end extension part of the back-end member and the connection member is provided with a back-end holding part that holds the inserted front-end extension part of the back-end member with a second level of holding strength, and
• the second level of holding strength between the back-end hole part and the front-end extension part is higher than the first level of holding strength between the front-end hole part and the back-end extension part.