Dong-a Pencil Co., Ltd.

Chung-Kyung Kim

A tip mechanism for a knock type ballpoint pen with an ink container includes a tip body having an inner ink-guide hole and top and bottom end portions. The top end portion of the tip body is fitted within the ink container. A ball receptor is formed at the bottom end portion of the tip body. A ball is disposed in the ball receptor to be rotated. The ball is partially exposed to the outside. An elastic member is inserted into the ink-guide hole of the tip body. The elastic member has a ball pressing part for pressing the ball toward the outside. The ball pressing part is formed with a curved shape. The curved shape of the ball pressing part is processed by bending the ball pressing part at a predetermined angle.

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Seoul, South Korea

Chung-Kyung Kim