JPH0528068Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a composite writing instrument equipped with a plurality of writing fonts.

(Prior art) Conventional composite writing implements store multiple writing bodies inside a barrel, and use a feeding mechanism such as a cylindrical cam to alternately move the writing tip of each writing body into and out of the barrel's tip opening. There are some with a structure in which the writing part is placed at both ends of the shaft cylinder, and others with a writing part provided at each end of the barrel.

(Problems to be solved by the invention) Among the above-mentioned conventional compound writing instruments, those that utilize a feeding mechanism such as a cylindrical cam have the disadvantage of being extremely expensive due to their complex structure and large number of parts. The one in which writing parts were provided at both ends of the paper had the disadvantage that the number of cursive fonts was limited to two. The object of the present invention is to provide a composite writing instrument that has a simple structure, can be provided at extremely low cost, and can have any number of writing fonts.

(Means for Solving the Problems) The present invention provides a large-diameter storage hole in the center of the barrel, a required number of small-diameter storage holes on the sides of the large-diameter storage hole, and A notch is provided at the rear position of the small diameter storage hole in the barrel, and an elastically deformable convex part is provided on the inner surface of the notch, while a tail having a fingerhold part is attached to the main writing body to be attached to the large diameter storage hole of the barrel. A sub-cursive body with a plug fixed to the rear end is provided, and the main body of the sub-cursive body can be inserted into and removed from the small-diameter storage hole of the barrel, and the tail plug can be inserted into and removed from the notch. The above object is achieved by providing a composite writing instrument characterized in that the convex portion can be freely locked. Here, the main cursive and secondary cursive can be any cursive such as sharp pencil or ballpoint pen. Further, the number of small-diameter storage holes provided in the shaft cylinder is also arbitrary.

(Embodiment) Figures 1 to 5 show the first embodiment, in which a large-diameter axial tube is stored in the center of a resin-made shaft tube 2 with bulges 1 on both side surfaces. A hole 3 is provided, and a pair of small-diameter storage holes 4 are provided on both sides of the large-diameter storage hole 3 inside the bulging portion 1 and communicated with the large-diameter storage hole 3 by grooves 5 having a width smaller than the inner diameter thereof. In addition, a notch 6 is provided at a position rearward of the small diameter storage hole 4 at the rear end edge of the shaft cylinder 2, and an elastically deformable convex portion 7 is provided on the inner surface of the notch 6 by an undercut. One sharp pencil unit 8 as a main writing body attached to the large-diameter storage hole 3 of the barrel 2
Also, a tail plug 1 has an uneven finger hook 9 formed on its side surface.
A pair of ballpoint pen units 12 each filled with ink of a different color as a sub-cursive character with 0 fixed to the rear end of a refeel shaft 11 are provided, and the refeel shaft 11, which is the main body of the ballpoint pen unit 12, is connected to the small diameter of the barrel barrel 2. The tail plug 10 can be fitted into and removed from the storage hole 4 and the notch 6, respectively, and the front end recess 13 of the finger hook 9 in the tail plug 10 and the notch 6 of the shaft tube 2
It is configured such that it can be freely locked with the convex portion 7 on the inner surface of the holder. In the figure, reference numeral 14 indicates a clip formed integrally with the barrel 2, and 15, 16, 17, 18, 1
Reference numerals 9 and 20 respectively indicate a lead case, a knock cover, an eraser, an eraser holding fitting, an eraser fitting tube, and a lead cleaning pin in the sharp pencil unit 8.

Next, FIG. 6 shows a second embodiment, which differs from the first embodiment described above in that there are small diameter storage holes not only on both sides of the large diameter storage hole 3 of the shaft tube 2 but also on the upper and lower sides. 4, so that four sub-cursive fonts can be attached.

(Function) The main cursive body of the compound writing instrument of the present invention can be written by holding the barrel as it is, and when using the secondary cursive body, use the finger grip of the tail plug to hold the secondary cursive body on the barrel barrel. Remove it from the small diameter storage hole and write while holding the main body. When the use of the secondary cursive is finished, it is inserted again into the small-diameter storage hole of the barrel and the tail plug is locked and fixed by the convex part of the notch.

(Effects of the invention) As described above, the complex writing instrument of the present invention eliminates the need for the conventional complicated feeding mechanism and simplifies the structure, making it possible to reduce costs. Since small-diameter storage holes can be freely arranged on the sides, there are advantages such as the ability to arbitrarily set the number of sub-cursive fonts.

[Brief explanation of drawings]

Figures 1 to 5 show the first embodiment of the present invention, with Figure 1 being an overall perspective view, Figure 2 being a perspective view with the sub-cursive font removed, and Figure 3 being a perspective view of the device. FIG. 4 is an enlarged side view of the rear end of the shaft tube, with a portion of the notch cut out, and FIG. 5 is a sectional view of only the shaft tube. Also, the 6th
The figure is a sectional view of only the shaft cylinder of the second embodiment of the present invention. 1...Bulge, 2...Shaft tube, 3...Large diameter storage hole, 4...Small diameter storage hole, 5...Groove, 6...Notch, 7...Protrusion, 8...Sharp pencil Unit, 9... Finger rest, 10... Tail plug, 11... Refill shaft, 12... Ballpoint pen unit, 13...
... Front end recess of finger rest, 14... Clip, 15...
...Lead case, 16...Knot cover, 17...Eraser, 18...Eraser holding fitting, 19...Eraser fitting tube, 20...Lead cleaning pin.

Claims (1)

[Scope of utility model registration request] A large-diameter storage hole is provided in the center of the shaft cylinder, and a required number of small-diameter storage holes are provided on the sides of the large-diameter storage hole, and a notch is provided at the rear end of the small-diameter storage hole at the rear end edge of the shaft cylinder. An elastically deformable convex portion is provided on the inner surface of the notch, and a secondary writing body is provided with a tail plug having a fingerhold portion fixed to the rear end along with the main writing body to be attached to the large diameter storage hole of the barrel. The main body of the sub-cursive writing body can be fitted into and removed from the small-diameter storage hole of the shaft tube, and the tail plug can be fitted into and removed from the notch, respectively, and the tail plug and the convex part of the notch can be locked together. Composite writing instrument.