JPH07112759B2 - Multipurpose writing instrument - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to (1) an invention of a writing instrument that is thin, short, compact, low-cost and lightweight, and (2) has a plurality of writing functions such as a pencil, a black ballpoint pen, and a red ballpoint pen. The present invention relates to a writing instrument that does not have a mechanical movement function and can be used by selecting any of these.

Problems with conventional products It is known that the writing implements such as pencils and ballpoint pens are stored in one writing implement and selected and used. However, a complicated mechanism is required, resulting in an increase in cost and a gripping shaft. Was thick and was inconvenient for carrying and writing.

Further, a pencil requires an eraser and a sharpener, a ballpoint pen requires a cap, and a clerical work requires a stamp and a clock. By combining these together, it becomes compact, low cost, and lightweight.

Embodiment of the Invention FIG. 1 shows a writing instrument in which an automatic feed mechanism for a pencil lead 4 of a mechanical pencil is provided at one end of a grip shaft 1 and a ballpoint pen 3 is provided at the other end in opposite directions. In the grip shaft 1, the pencil lead 4 fed out from the automatic lead feeding unit 2 of the mechanical pencil is inserted into the ink tube 6 that stores the ink 5 of the ballpoint pen 3,
The pencil lead 4 and the ink tube 6 intersect each other in the opposite direction coaxially, and the total length L of the grip shaft 1 is the length l ₁ of the pencil lead 4 and the length l ₂ of the ink tube of the ballpoint pen. Can be shorter than the length.

In the automatic lead feeding unit 2, 8 is a moving shaft for driving the lead, 7 is a holder for 8, and 9 is a pencil lead for writing. When writing, the lead 9 and 8 are pushed so that the lead 9 automatically comes out. It has become.

The ball-point pen 3 has a holder 10 and a ball point 11 for ejecting ink.

FIG. 2 shows an embodiment of a writing instrument in which the pencil lead 4 and the ink tube 6 of the ball-point pen intersect in parallel in the grip shaft 1.

FIG. 3 shows a writing instrument in which the pencil lead 4 and the two ink tubes 6 and 6 ′ of the red ballpoint pen and the black ballpoint pen are crossed in parallel in the opposite direction in the grip shaft 1.

In FIGS. 4 and 5, 34 is a cross section of the end of the pencil part, and 37 is a cross section of the two ballpoint pens.

In FIGS. 2 and 3, the entire length L of the grip shaft 1 can be shortened to almost the same length as the pencil lead 4 or the ink tube 6.

A writing instrument having writing ends 9 or 11 at both ends of the grip shaft as in the writing instrument of FIGS. 1 to 3 has the other end like the writing instrument 12 having the automatic core feeding section 2 at one end as shown in FIG. Eraser 13 cannot be attached to. In the embodiment of the present invention shown in FIG. 7, an eraser 13 is provided on the cap 14. With this, if you put it on the ball-point pen 3, the ink won't stick to the shirt, you can use it to erase the letters written by the mechanical pencil with the automatic lead-feeding part 2, and you can put it in your pocket with the clip 15. It shows that the ballpoint pen 3 can be used by covering it with a mechanical pencil.

FIG. 8 shows a cap 16 which is entirely made of an eraser including the clip 15, and a part of the cap 16 projects into the shape of the clip 15 and fits in the pocket as a clip.

In FIG. 9, a seal 17 is provided on a cap 18, and 17 'is a seal cover. While holding the cap 18 on the shaft 1,
Alternatively, the cap 18 alone can be used for marking.

FIG. 10 shows an embodiment in which the cap 14 provided with the OK mark 20 is connected to the cap 14 provided with the name mark 19, and then the cap 22 provided with the eraser 13 is sequentially coupled. A combination of these marks and eraser makes a writing instrument that can be used for each purpose.

FIG. 11 shows an embodiment in which the timepiece 43 is provided on the cap.

Figure 12 shows the ink tube of a ballpoint pen 24 that uses black ink.
30, ink tube 33 of ballpoint pen 25, which uses red ink,
And an ink tube 32 of a ballpoint pen 31 that uses blue ink
Are combined in parallel by bridges 28 and 29 of a triangular plate to form a triangular prism-shaped grip, and a pencil lead 4 of a mechanical pencil in the direction opposite to that of the ballpoint pen and its automatic lead feeding portion 2 are provided in the center of the inside thereof. In this case, the pencil lead is exposed, but it is protected from the fingers by the three ink tubes 30, 32, 33 of the ballpoint pen, which has the advantage of not breaking. Moreover, it is compact and allows you to write in four different ways. Without the above mechanical pencil, only the three axes of ballpoint pens 24, 25 and 31 are acceptable.
A mechanical pencil may be included in these three axes.

FIG. 13 shows an example in which the ballpoint pen of FIG. 12 has two axes, and a pencil lead 4 of a mechanical pencil in the opposite direction to the ballpoint pen is mounted between the ink tubes of the ballpoint pen. In this case, the pencil lead 4 is exposed. Since the core is reduced, the automatic feeding is known, and the ink loss of the ballpoint pen is known, and the ink tube of the ballpoint pen is also used as a grip, so it is lightweight, inexpensive, thin, and convenient to use. In addition, the ink tube of the ballpoint pen has the effect of preventing the pencil lead from breaking. The present invention also includes the case where the bridge 29 of the automatic lead feeding unit 2 or the ink tube of the ballpoint pen is an eraser. 26 is a cap made of an eraser and has holes 40 and 41 to be inserted into a ballpoint pen point. Alternatively, the cap 26 may be made of plastic or the like, and an eraser 44 may be provided on the cap 26, so that when the ballpoint pen point is covered, the eraser 44 passes through the hole 45 of the bridge 29, becomes 44 ', and may fit inside. . It is also an aspect of the present invention to attach the pocket-holding clip 42 to the automatic lead feeding unit 2 that serves as a holder for the bridge 29 or the pencil and the ballpoint pen.

FIG. 13 shows a principle diagram of writing by selecting one of the two-axis ballpoint pens. The paper surface to be written by aligning the ball point and the tip of the pencil lead with the plane 27 orthogonal to the grip
If you incline α to 36, the ballpoint pen 31 will contact and
Since 24 is separated from the paper by a distance d, only 31 ballpoint pens can be used. That is, it is possible to select the type of ballpoint pen without a mechanism such as a knocking type by utilizing the inclination of the grip when writing.

Further, the cap shown in FIGS. 7 to 11 is most suitable for the writing instrument of the present invention, but it can be used also for a conventionally known general writing instrument or can be used alone.

EFFECTS OF THE INVENTION The present invention is thin, short, light, compact, and has no mechanism such as a knock type, which reduces the manufacturing cost, and enables multi-functional writing of mechanical pencils and ballpoint pens, and is easy to handle and has a pencil lead. Surrounded by the ink tube of a ball-point pen, it is safe and does not break, so it can be manufactured, stocked, transported, used,
It is an extremely effective invention for mobile phones.

[Brief description of drawings]

1 to 3 are partially longitudinal side views, and FIG.
FIG. 5 is a sectional view taken along the line AA of FIG. 5, FIG. 5 is a sectional view taken along the line BB of FIG. 3, FIG. 6 is a side view, FIG. 7 to FIG. A side view, FIG. 12 is a perspective view, and FIG. 13 is a partially longitudinal side view. 3, 24, 25, 31 …… Ballpoint pen 6, 30, 32, 33 …… Ink tube 4 …… Mechanical pencil pencil lead

Claims (1)

[Claims] 1. The ink tubes of a plurality of ball-point pens are arranged in parallel in the same direction, and a pencil lead of a mechanical pencil in the opposite direction to the ball-point pen is arranged inside the ink tubes with the ink tubes as outer circumferences. A multi-use writing instrument characterized in that the core is prevented from being broken and the plural ink tubes are gripped.