KNOCK TYPE WRITING INSTRUMENT

• Main Authors: ABE SHIGEO, MURAI WAKANA, NAKAMURA NAOKO
• Format: Patent
• Language: English; Japanese
• Published: 27.09.2018
• Subjects: BUREAU ACCESSORIES; IMPLEMENTS FOR WRITING OR DRAWING; PERFORMING OPERATIONS; TRANSPORTING; WRITING OR DRAWING IMPLEMENTS

PROBLEM TO BE SOLVED: To prevent a knock body from rattling in a forward and backward direction.SOLUTION: It includes a barrel 10, a knock body 20 which is supported inside the barrel 10 so as to move forward and backward to the barrel 10 in a first range W1 and whose rear end side is exposed to outside of the barrel, a rotor 30 which is pushed by the knock body 20 and advances, a cam mechanism A that rotates and locks the advancing rotor 30 by a cam slope 21a, a refill 40 that is connected with the front end of the rotor 30 and makes a writing part 41 to protrude from the front end of the barrel by means of advancing of the rotor 30, and a first energization member 51 that energizes the rotor 30 backwardly in relation to the barrel 10. The knock body 20 is connected in relation to the rotor 30 in such a way that it can move forward and backward slightly in a second range W2 smaller than the first range W1, and a second energization member 52 is provided to energize this knock body 20 backwardly in relation to the barrel 10.SELECTED DRAWING: Figure 1 【課題】 ノック体が前後方向へがたつくのを防ぐ。【解決手段】軸筒１０と、軸筒１０に対し第１の範囲Ｗ１前後へ移動するように軸筒１０内に支持されるとともに後端側を軸筒外に露出したノック体２０と、ノック体２０に押動されて前進する回転子３０と、前進した際の回転子３０をカム斜面２１ａにより回転させて係止するカム機構Ａと、回転子３０の前端側に接続され回転子３０の前進により筆記部４１を軸筒前端から突出させる中芯４０と、回転子３０を軸筒１０に対し後方へ付勢する第１の付勢部材５１と備え、ノック体２０が回転子３０に対し第１の範囲Ｗ１よりも小さい第２の範囲Ｗ２前後へ微動可能に接続され、このノック体２０を軸筒１０に対し後方へ付勢する第２の付勢部材５２が設けられている。【選択図】 図１