INPUT TOUCH PEN

To provide an input touch pen that can prevent a digitizer refill from getting damaged at the time of knock operation, and whose tip can easily appear, and which can protect the tip when not in use.SOLUTION: An input touch pen 10 comprises: a digitizer refill 80 having a contact tip 82 that is stored inside a barrel 20 and can appear from an opening 22 of a tip end thereof, and also at the back of the contact tip, a tip end step portion 95 having a diameter larger than that of the opening 22 of the tip end; and a knock member 40 protruding from an opening 24 of a rear end of the barrel 20. When a knock stroke of the digitizer refill 80 is defined as X, a distance from the tip end step portion 95 in a state where the contact tip 82 is inserted inside the opening 22 of the tip end to an inner surface of the tip side of the barrel 20 in an axial direction is defined as A, and a moving distance from a state where the contact tip 82 protrudes from the opening 22 of the tip end to a state where it is inserted inside the opening 22 of the tip end by operation of the knock member 40 is defined as Y, respectively, a relation of A>X>Y is satisfied.SELECTED DRAWING: Figure 1 【課題】ノック動作の際にデジタイザリフィルの損傷を防ぎ、先端の出没を手軽に行うことができ、不使用時には先端を保護することができる入力タッチペンを提供する。【解決手段】軸筒20の内部に収容されるとともにその先端の開口部22から出没可能な接触先端82及びその後方に前記先端の開口部22より大径な先端段部95を有するデジタイザリフィル80と、軸筒20の後端の開口部24から突出するノック部材40とを備えた入力タッチペン10において、前記デジタイザリフィル80のノックストロークをＸ、前記接触先端82が前記先端の開口部22の内部に没入している状態における前記先端段部95から前記軸筒20の先端側の内面への軸線方向の距離をＡ及び前記接触先端82が前記先端の開口部22から突出した状態から前記ノック部材40の操作により該先端の開口部22内に没入した状態までに移動する距離をＹとそれぞれ定義したとき、Ａ＞Ｘ＞Ｙとの関係を満たす。【選択図】図１