JPH01175889U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a knob-type writing instrument such as a water-based ballpoint pen according to an embodiment of the present invention, showing a state in which the writing tip is housed within the shaft. Figure 2 is a cross-sectional view taken along line AA in Figure 1, Figure 3 is a longitudinal cross-sectional view of the same writing instrument with the writing tip protruding from the tip hole of the shaft tip, and Figure 4 is a cross-sectional view of the writing instrument according to the present invention. 1 is a vertical cross-sectional view of a refill mounted on a notch-type writing instrument. 1...knot type writing instrument, 2...shaft, 3...clip,
4...ball part, 5...locking projection, 6...support part, 7...locking step, 8, 9...window, 10...contact step, 11...return spring, 12...tip hole, 13...recess, 1
4...Refeel, 15...Refeel body, 16...
Re-feel front cylinder, 17... tail plug, 18, 18a... window, 19... notch, 20... peripheral rib, 21... notch, 22... horizontal hole, 23... air flow passage, 24... small diameter part, 25... under Cut portion, 26... Rib, 27
...Guide cylinder part, 28...Tip part, 29...Vent hole, 30
...Writing tip, 31...Tip, 32...Ball, 3
3... Rear end portion, 34... Seal cap, 35... Ink guiding core, 36... Ink storage body, 40... Locking portion,
41...split.

Claims (1)

[Scope of utility model registration request] The re-feel body 15 and the re-feel front cylinder 16 that fits tightly into the front part thereof are made of a resin molded product having excellent properties of suppressing ink evaporation, and the ball 32 is held in the tip hole of the small diameter part 24 at the tip of the re-feel body 15. At the same time, the ink absorber 36 filled with ink is inserted from the rear end of the refill main body 15, the rear end is tightly fitted with the tail plug 17, and the ink absorber 36 is inserted from approximately directly below the ball 32. An ink guide core 35 is connected to the ink guide core 35, and a horizontal hole 22 is provided approximately forward of the rear end between the refill main body 15 and the refill front cylinder 16 which are tightly fitted, and communicates with the ink storage section. An air flow passage 23 is appropriately formed between the outer periphery of the re-feel main body 15 and the inner periphery of the re-feel front cylinder 16, and a ventilation hole 29 is formed in the end surface of the tip 28 of the re-feel front cylinder 16, so that the tip part A re-feel 14 is attached to the return spring 1 with a seal cap 34 removably attached to the tip 31 and the vent hole 29.
A shaft 2 is mounted on the shaft 1 so as to be movable back and forth, and a window 8 and a locking step 7 are formed on the rear side, and a window 9 and an abutment step 10 are formed at the rear, and the clip 3 is pushed into the ball from the front. 4, a locking protrusion 5, and a support part 6, and windows 18 and 18a are provided in the tail plug 17 fixed to the rear end of the re-feel 14, into which the support part 6 of the clip 3 is inserted. is removably fixed through the window 9 of the shaft 2, and when the rear end notch 19 of the tail plug 17 is knocked, the locking protrusion 5 engages and disengages from the locking step 7, and the re-feel 14 A knuckle-type writing instrument such as a water-based ballpoint pen, characterized in that the tip of the pen is retractable from the tip hole 12 of the shaft 2.