SHAKE-OUT TYPE MECHANICAL PENCIL

• Main Author: KAWARASAKI YUJI
• Format: Patent
• Language: English; Japanese
• Published: 17.05.2022
• Subjects: BUREAU ACCESSORIES; IMPLEMENTS FOR WRITING OR DRAWING; PERFORMING OPERATIONS; TRANSPORTING; WRITING OR DRAWING IMPLEMENTS

To provide a shake-out type mechanical pencil having a switching function for invalidating delivery function of a writing lead by a shaking action and preventing a minute longitudinal movement of a weight body in a state of invalidating the delivery function of the writing lead by the shaking action.SOLUTION: The shake-out type mechanical pencil includes, in a shaft cylinder 2, a lead delivery mechanism 3 having a lead tank 33 for storing writing leads 4 and a chuck, and a weight body 5 arranged so as to freely move forward and backward, and by shaking the shaft cylinder 2, the weight body 5 is advanced and presses an abutting part 32b of the lead delivery mechanism 3 to protrude the writing lead 4 from a front end opening part 24a of the shaft cylinder 2. The shake-out type mechanical pencil further includes, in the shaft cylinder 2, an operation body 9 engaged so as not to move frontward and backward and so as to rotate, a moving piece 6 following the rotation of the operation body 9 to move frontward and backward with respect to the shaft cylinder 2, a first elastic body 7 arranged between the moving piece 6 and the weight body 5, and a second elastic body 8 arranged between the moving piece 6 and the shaft cylinder 2.SELECTED DRAWING: Figure 1 【課題】振り動作による筆記芯の繰り出し機能を無効化するための切り替え機能を備えると共に、振り動作による筆記芯の繰り出し機能を無効化した状態において、重量体の微小な前後動を防止する振出式シャープペンシルを提供すること。【解決手段】軸筒２内に、筆記芯４を収容する芯タンク３３とチャックを有する芯繰出機構３と、前後動自在に配設された重量体５と、を具備し、軸筒２を振ることにより前進させた重量体５で芯繰出機構３の当接部３２ｂを押圧し、筆記芯４を軸筒２の前端開口部２４ａから突出させ、軸筒２内に、前後動不能且つ回転可能に係止された操作体９と、操作体９の回転に従動して軸筒２に対して前後動する移動駒６と、移動駒６と重量体５との間に配設された第１弾性体７と、移動駒６と軸筒２との間に配置された第２弾性体８と、を備える。【選択図】図１