Knock-type electronic pen including first and second position indicators located at different ends of a tubular casing

A knock-type electronic pen comprising:

• a tubular casing;
• a first position indicator disposed such that a tip of the first position indicator for position indication is located on a side of an opening at a first end in an axial direction of the tubular casing;
• a second position indicator disposed such that a tip of the second position indicator for position indication is located on a side of an opening at a second end in the axial direction of the tubular casing;
• a knock cam mechanism which includes a knock portion including a part protruding outward from the opening at the second end in the axial direction of the tubular casing and which alternately produces, in response to a knock operation on the knock portion, a state in which at least a core rod body at the tip of the first position indicator protrudes from the opening at the first end of the tubular casing and a state in which the first position indicator including the tip of the first position indicator is housed in the tubular casing,
• wherein the second position indicator is housed in the knock cam mechanism such that at least a core rod body at the tip of the second position indicator is housed in the part of the knock portion protruding outward from the opening at the second end of the tubular casing;
• and
• a holding mechanism which, in the state in which at least the core rod body of the first position indicator protrudes from the opening at the first end of the tubular casing by the knock operation on the knock portion, returns the knock portion pushed into the tubular casing by the knock operation to a state of protruding outward from the opening at the second end in the axial direction of the tubular casing and holds the knock portion in the protruding state,
• wherein the holding mechanism includes another knock cam mechanism which is different from the knock cam mechanism and which operates in response to the knock operation on the knock portion.