JPH0224237B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a fountain pen that can be used as a sharp pencil, which is equipped with a sharp pencil that can be easily protruded by pressing the tail end of the barrel of the fountain pen inside the cap. Then, a cap body with a hole for the lead of a sharp pencil is fixed to the same part, and a chuck with a flange integrally formed at the rear end is inserted into this cap, and the area around the tip of the chuck is inserted. A fastener of the chuck is arranged on the top of the chuck, a coil spring is interposed between the rear end of the fastener and the rear end of the cap body and the flange, and a fastener is installed on the inner surface of the part near the tip of the cap body. At the same time, attach a ring body that abuts against the barrel to open the chuck, and abut the front end of the inner lid, which has a stepped part that abuts against the tail end of the barrel of the fountain pen, on the rear surface of the collar, and then press the opening edge of the inner lid against the rear surface of the collar. The gist is that it can freely collide with the rear end edge of a middle spring body that is attached to the inner surface of the opening of the cap and is used to prevent the shaft cylinder from being pulled out.

The embodiment shown in the drawings will be described below. The cap 1 has an open tip, a female thread 2 is threaded on the inner diameter part, and a cap body with a male thread 3 formed in the rear end cylindrical part to be screwed into the female thread 2. 4 grips the clip 5 and is screwed into the opening at its tip. cap 1
A three-piece chuck 12 having a flange 11 at the rear end is housed in its inner diameter. Three-split chuck 12
A fastener 13 is fitted onto the head of the holder, and a coil spring 14 is interposed between the rear end face and the flange 11, so that the fastener 13 normally tightens the three-split chuck 12. The tip of the coil spring 14 is fixed to the rear end of the male screw 3 of the rear end cylinder part of the base body 4 on the outer periphery of the coil spring 14, and the coil spring 15 is connected to the collar part 11.
It is interposed between. This coil spring 15 has a helical direction opposite to that of the coil spring 14, and prevents mutual meshing. An annular body 16 is fitted into the deep inner diameter of the mouthpiece body 4, and blocks the fastener 13 when the three-part chuck 12 moves forward, thereby opening the head of the three-part chuck 12. A needle-shaped inner lid 17 is inserted inside the cap 1. The inner lid 17 has its bottom end face always in contact with the rear end of the rear end flange 11 of the three-piece chuck 12 by means of a coil spring 15. A stepped portion 18 is provided at the inner diameter portion of the opening periphery of the inner lid 17.
is formed, and the tail end of the fountain pen barrel 19 is hooked thereon, and the nib of the fountain pen is inserted into the interior so that the outer surface of the tip of the barrel comes into close contact with the periphery. The periphery of the opening of the inner lid 17 abuts against the tip edge of the inner spring body 20 fitted into the inner diameter portion of the base end of the cap 1, thereby preventing it from coming off. In the above, when the tail end of the fountain pen barrel 19 is inserted into the inner lid 17 inside the cap and pressed, the inner lid 17 moves forward and compresses the coil spring 15 to push the lead 21 of the sharp pencil into the recessed hole 6 of the cap body 4. protrude from The core 21 is held in the protruding state by the contact pressure between the rear outer peripheral surface of the fountain pen barrel 19 and the middle spring body 20. That is, the inner surface of the cap located on the outer periphery of the middle spring body 20 and the rear outer circumferential surface of the fountain pen barrel 19 have a slight taper shape, so that the inner surface of the middle spring body 20 and the outer surface of the barrel are in contact with each other as a whole. It is designed to increase pressure.
Due to this tapered surface, when the tail end of the barrel is inserted, the holding force is large and the protruding state of the core 21 can be maintained, and when it is extracted, only a light force is required. When it is desired to pull out the lead of the sharp pencil, the barrel 19 is pressed to bring the fastener 13 into contact with the ring body 16, and the head of the three-split chuck 12 opens, allowing the lead to be pulled out. Core 2
1 can be replenished from the tip side of the 3-split chuck 12. Further, when the fountain pen barrel 19 is pulled out from the inner lid 17, the three-part chuck 12 returns to its original position due to the restoring force of the coil springs 14 and 15, and its core 21 sinks into the interior of the cap body 4. Conversely, when the nib of the fountain pen is inserted into the cap, the ring 22 of the fountain pen barrel hits the rim of the cap, and the inner lid 17 remains in its position without moving forward and is sealed tightly against the nib. It protects the pen tip and prevents ink from evaporating from the pen tip.

As described above, the present invention can be used as a fountain pen as it is, and the sharp pencil inside the cap can be protruded so that the whole can also function as a sharp pencil, which is extremely convenient for use. In the invention, a flange is integrally formed at the tail end of the chuck, and a coil spring is interposed between each rear end of the chuck fastener and the cap body and the flange. The tip of the inner cover, which has a step that abuts against the cap, is brought into contact with the opening edge of the inner cover, and the opening edge of the inner cover is attached to the rear edge of the inner spring body for preventing the barrel from being pulled out, which is attached to the inner surface of the opening of the cap. Since it is freely collapsible, the barrel of the fountain pen can be used as the knob of a sharp pencil to feed out the lead, which has the effect of significantly simplifying the overall structure. .

[Brief explanation of drawings]

The figure shows an embodiment of the present invention.
The figure is a vertical cross-sectional view of the fountain pen with the nib inserted into the cap, and Figure 2 is a vertical cross-sectional view of the sharp pencil with the tail end of the barrel inserted and ready for writing.
FIG. 3 is a longitudinal cross-sectional view of the chuck head opened to allow the lead to be extracted. 1... Cap, 4... Base body, 6... Emerging hole, 11... Flam part, 12... Three-split chuck, 1
3... Fastener, 14... Coil spring, 15
... Coil spring, 16 ... Ring body, 17 ...
Inner lid, 18...Step part, 19...Fountain pen barrel, 20
... Middle spring body, 21 ... Core, 22 ... Ring.

Claims (1)

[Claims] 1 Open the tip of the cap, fix the mouthpiece with a hole for the sharp pencil lead in the same part, insert the chuck with the flange integrally formed at the rear end into the cap, and open the chuck. A fastener of the same chuck is arranged around the part near the tip, and coil springs are interposed between the rear end of the fastener and the rear end of the cap body and the flange, and further, A ring body is attached to the inner surface of the part to open the chuck by abutting against the fastener, and the front end surface of the inner lid, which has a stepped part that abuts against the tail end of the barrel of the fountain pen, is brought into contact with the rear surface of the flange. A fountain pen that can also be used as a sharp pencil, characterized in that the opening edge of the inner lid can freely collide with the rear edge of an inner spring body attached to the inner surface of the opening of the cap to prevent the barrel from being pulled out.