Electronic pen
Disclosed is an electronic pen including a casing, a core body, a core body holding part disposed in the casing and holding a portion of the core body, electronic parts disposed at a rear stage of the core body holding part in the casing and performing electronic pen functions, an internal constituent part through which the core body penetrates on a pen tip side in the casing, a first ring-shaped elastic component in contact with an entirety of a circumference of a side surface of the internal constituent part and an entirety of a circumference of an inner wall surface of the casing, and a second ring-shaped elastic component in contact with an entirety of a circumference of a side surface of the core body holding part and an entirety of a circumference of an inner wall surface of the internal constituent part.
1 . An electronic pen comprising:
a tubular casing having an opening on a pen tip side;
a bar-shaped core body;
a core body holding part that is disposed in the casing and holds a rear end portion of the core body such that a tip portion of the core body protrudes from the opening of the casing;
electronic parts that are disposed at a rear stage of the core body holding part in the casing and that, in operation, perform electronic pen functions;
a tubular internal constituent part through which the core body penetrates on the pen tip side in the casing;
a first ring-shaped elastic component in contact with an entirety of a circumference of a side surface of the core body holding part and an entirety of a circumference of an inner wall surface of the internal constituent part; and
a second ring-shaped elastic component different from the first ring-shaped elastic component,
wherein the second ring-shaped elastic component is in contact with an entirety of a circumference of a side surface of the internal constituent part and an entirety of a circumference of an inner wall surface of the casing, and
wherein at least part of the second ring-shaped elastic component is closer to the opening on the pen tip side of the casing than the first ring-shaped elastic component.
2 . The electronic pen according to claim 1 , wherein:
a side surface of the second ring-shaped elastic component on a side in contact with the inner wall surface of the casing has a circular arc shape when the second ring-shaped elastic component is cut in a direction along an axial center direction of the electronic pen that passes through a center of the second ring-shaped elastic component.
3 . An electronic pen comprising:
a tubular casing having an opening on a pen tip side of the casing;
a bar-shaped core body including a core bar and a protective component that covers part of the core bar from an end portion of the core bar on the pen tip side of the casing to a position separate from the end portion in a rear end direction of the core body by a predetermined length;
a core body holding part that is disposed in the casing and holds a rear end portion of the core body such that a tip portion of the core body protrudes from the opening of the casing;
electronic parts that are disposed at a rear stage of the core body holding part in the casing and that, in operation, perform electronic pen functions;
a tubular internal constituent part through which the core body penetrates on the pen tip side in the casing;
an inside ring-shaped elastic component being in contact with an entirety of a circumference of a rear end portion of the protective component of the core body and an entirety of a circumference of an inner wall surface of the internal constituent part; and
an outside ring-shaped elastic component in contact with an entirety of a circumference of a side surface of the internal constituent part and an entirety of a circumference of an inner wall surface of the casing,
wherein at least part of the outside ring-shaped elastic component is closer to the opening on the pen tip side of the casing than the inside ring-shaped elastic component.