Anti-falling pen cap structure and rotary pen

• Main Authors: ZENG WENFEI, NIU XIAODONG, LONG BICHENG
• Format: Patent
• Language: Chinese; English
• Published: 15.09.2023
• Subjects: BUREAU ACCESSORIES; IMPLEMENTS FOR WRITING OR DRAWING; PERFORMING OPERATIONS; TRANSPORTING; WRITING OR DRAWING IMPLEMENTS

The pen cap structure comprises a pen cap shell, a pen cap lining and a first rotating wheel, one end of the pen cap shell is open, the other end of the pen cap shell is closed, the pen cap shell is provided with a cavity, a through hole is formed in the pen cap lining in the axial direction, and the pen cap lining is installed in the cavity of the pen cap shell and extends in the axial direction of the pen cap shell; one end of the first rotating wheel is located outside the pen cap shell and the pen cap lining, the other end of the first rotating wheel penetrates through a through hole of the pen cap lining and extends into an inner cavity of the pen cap shell, a second convex thread part and an annular convex column are arranged in the position, close to the closed end, of the cavity of the pen cap shell, and the annular convex column is fixed to the inner wall of the closed end; an annular space between the second outwards-protruding thread part and the annular protruding column forms an inverted annular