Abstract: A slide-type writing instrument having a drying-prevention device includes: a pen housing (10); an ink holder (30) disposed in the pen housing (10); a sealing member (40) configured to prevent a drying phenomenon of ink on a pen tip (31); a spring (50) configured to effect elastic support between the sealing member (40) and the ink holder (30); a guide member (60) configured to guide the sealing member (40) when the ink holder (30) is advanced or retreated; and a cam protrusion (70) configured to be responsible for a guiding function of moving the guide member (60). The sealing member includes a soft tube formed of a soft material and a hard tube formed of a hard material and in the shape of a hollow tube to externally surround the soft tube, and the soft tube and the hard tube form a dual cross-section structure.

Abstract: A slide-type writing instrument having a drying-prevention device includes: a pen housing (10); an ink holder (30) disposed in the pen housing (10); a sealing member (40) configured to prevent a drying phenomenon of ink on a pen tip (31); a spring (50) configured to effect elastic support between the sealing member (40) and the ink holder (30); a guide member (60) configured to guide the sealing member (40) when the ink holder (30) is advanced or retreated; and a cam protrusion (70) configured to be responsible for a guiding function of moving the guide member (60). The sealing member includes a soft tube formed of a soft material and a hard tube formed of a hard material and in the shape of a hollow tube to externally surround the soft tube, and the soft tube and the hard tube form a dual cross-section structure.

Abstract: A slide-type writing instrument having a drying-prevention device. The slide-type writing instrument includes a pen housing (10); a button clip part (20); an ink holder (30) having a cam protrusion (70); a sealing member (40) including a cover (41) and a fixing cap (45); a spring member (50); and a guide member (60) configured to guide the cover (41). The sealing member (40) includes an inner soft tube (40a) formed of a soft material and in the shape of a hollow tube, and an outer hard tube (40b) formed of a hard material and in the shape of a hollow tube and externally surrounding the soft tube (40a). The soft tube (40a) and the hard tube (40b) are coupled to each other to form a dual cross-section structure, and a lower end of the soft tube (40a) further extends than a lower end of the hard tube (40b).

Abstract: A slide-type writing instrument having a drying-prevention device. The slide-type writing instrument includes a pen housing (10); a button clip part (20); an ink holder (30) having a cam protrusion (70); a sealing member (40) including a cover (41) and a fixing cap (45); a spring member (50); and a guide member (60) configured to guide the cover (41). The sealing member (40) includes an inner soft tube (40a) formed of a soft material and in the shape of a hollow tube, and an outer hard tube (40b) formed of a hard material and in the shape of a hollow tube and externally surrounding the soft tube (40a). The soft tube (40a) and the hard tube (40b) are coupled to each other to form a dual cross-section structure, and a lower end of the soft tube (40a) further extends than a lower end of the hard tube (40b).

Abstract: A multicolor writing instrument with an automatic return function includes a lower housing having a hollow cylindrical shape; an upper housing connected to an upper portion of the lower housing and formed with locking steps; a clip member hingedly provided on the upper housing so as to be movable about a hinge shaft; a coil spring resiliently installed between the clip member and the upper housing; pen cores filled with at least two different color inks; knobs having ends fitted into the respective pen cores; return springs resiliently installed between the pen cores and the knobs; and a return member formed integrally with the clip member on one side of the hinge shaft and toward the respective knobs.

Abstract: A multicolor writing instrument with an automatic return function includes a lower housing having a hollow cylindrical shape; an upper housing connected to an upper portion of the lower housing and formed with locking steps; a clip member hingedly provided on the upper housing so as to be movable about a hinge shaft; a coil spring resiliently installed between the clip member and the upper housing; pen cores filled with at least two different color inks; knobs having ends fitted into the respective pen cores; return springs resiliently installed between the pen cores and the knobs; and a return member formed integrally with the clip member on one side of the hinge shaft and toward the respective knobs.

Abstract: A slide type writing tool includes: a pen housing (10); an ink holder (30); a sealing member (40) having a cover (41); a spring (50) elastically supporting the sealing member (40) and the ink holder (30); and a guide member (60) positioned between the sealing member (40) and the pen housing (10) and having an operation hole (65) for the coming in and out of the pen tip (31) in response to the forward or backward movement of the ink holder (30), wherein the opening and closing operations of the cover (41) of the sealing member (40) are guided when the sealing member (40) moves, the ink holder (30) has cam protrusions (70) for enabling the guide member (60) to move and moving along the operation slits (62), and the sealing member (40) has a sealing portion (42) coming into contact with the ink holder (30) and protrusions (44).

Abstract: A slide type writing tool includes: a pen housing (10); an ink holder (30); a sealing member (40) having a cover (41); a spring (50) elastically supporting the sealing member (40) and the ink holder (30); and a guide member (60) positioned between the sealing member (40) and the pen housing (10) and having an operation hole (65) for the coming in and out of the pen tip (31) in response to the forward or backward movement of the ink holder (30), wherein the opening and closing operations of the cover (41) of the sealing member (40) are guided when the sealing member (40) moves, the ink holder (30) has cam protrusions (70) for enabling the guide member (60) to move and moving along the operation slits (62), and the sealing member (40) has a sealing portion (42) coming into contact with the ink holder (30) and protrusions (44).