JPS59196299A - Duplex type note - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compound writing instrument in which a single writing instrument is equipped with a plurality of writing fonts.

A typical example of conventional writing instruments of this type is one in which a plurality of writing bodies are built into the barrel and the tips of the brush are alternately protruded from the same tip opening by knocking or rotating operations. This method requires a knock mechanism and a cam mechanism, which complicates the structure and increases manufacturing costs, making it difficult to provide inexpensive products to customers. or,
In order to avoid the above-mentioned complicated structure, a method of moving a part of the cursive writing to fit inside the cap has also been proposed in Japanese Utility Model Publication No. 52-12490 by the present applicant. However, since there is not enough space inside the cap to insert the tail end of the barrel, it is impossible to accommodate multiple cursive letters, and if it is built-in, those cursive letters cannot be stored inside the cap. A major structural technical difficulty exists in how to make the bodies alternately protrude.

The present invention aims to provide consumers with an inexpensive and convenient compound writing instrument by allowing a plurality of writing fonts to be built into the cap with a simple structure and facilitating its manufacture.
Inside the cap of the fountain pen, which has an open end surface, multiple writing instruments such as a Nyabu pencil and a ballpoint pen are pressed backwards by a coil spring. The tip of the brush is made to protrude from the head end opening of the cap by inserting the tail end of the barrel into the cap and selectively bringing the step into contact with the rear end of a desired writing body and pressing it. It is characterized by:

Embodiments of the present invention will be described below with reference to the drawings.

First, the tip tube part (
2) A cylindrical body portion (4) is formed by screwing a rear end cylindrical portion (3), which is slightly longer than the tip cylindrical portion (2), onto the rear end.

In addition, a tip opening (5) from which a cursive tip (to be described later) protrudes is provided on the tip surface of the head, and a male thread (5) is provided on the outer surface of the rear end to be screwed into the female thread (1) of the tip tube portion (2). A cap body (7) with a threaded mark 6) is formed, and the cap body (7) is screwed onto the tip of the cylindrical body part (4) while sandwiching the clip (8) to form a cap (9). be done. Next, a guide body having an axial through hole (1 (1 (10)') opened from the distal end surface to the rear end surface is fixed inside the distal end tube part (2) of the cylindrical body part (4). In other words, the guide body has its distal end face peripheral edge abut against the internal stepped portion α4 provided deep inside the female thread ←2 provided on the internal diameter portion of the rear end of the distal end cylinder portion (2). At the same time, the peripheral edge of the rear end surface is clamped by the tip edge of the rear end tube part (3) which is screwed into the rear end female threaded part of the tip tube part (2). The method is not limited to this, but any method is possible as long as it is fixed by press-fitting, etc.The through hole (101 (IQ') in the guide body circle is the tip opening (5) of the base body (7) on the extension line in the tip direction. The guide circles can be made longer in the axial direction than shown in the figure, and it is also possible to make the guide of the cursive more stable. There are through holes on the rear end side of the body.
The coil spring (14) O→' has a groove formed at the outer circumferential position of the through hole ←Qα' in the guide body υ so that the coil spring α・υ (141') is positioned in the direction of the axis extension of the coil spring (14) O→' Next, a mechanical pencil Oe and a ballpoint pen αD are provided, and the through holes (LQI (Hi)' is attached by penetrating the mechanical pencil α6) and the ballpoint pen (1'O).A tail plug aos' having a groove (1 to 1') is fitted to the rear end of the mechanical pencil α6) and the ballpoint pen (1'O). The rear end of the coil spring ← 4) I' is locked and the coil spring (
14) (This prevents the writing from flying out due to the elastic force of 141'.The mechanical pencil 9 has a built-in chuck mechanism and a knock mechanism like normal ones, and also has a tail plug inside the rear end. An eraser Qυ with a lead cleaning bottle (A) attached is attached.To replenish the lead of a mechanical pencil (LE) or replace the ink tube of a ballpoint pen C1η, first use the tip cylinder part (2) of the cap cylinder part (4). and Heng Feng Feng's rear end tube part (3
) and then remove each tail plug (L'S (1
1' to coil spring Q4) (14) Unlock the tail plug (ls (19'). This is done by pulling out the tail plug (19'). Lock the coil spring a toga o' from the groove αuFj' of the tail plug Although it is a little troublesome to release the groove (lH
If you make the tail plug (1!lIH' into a spiral shape according to the pitch angle of the coil spring), it can be done smoothly by simply rotating the tail plug (1!lIH'), but if you make the coil spring (141 (141
' If the inner diameter of the cursive body and the outer periphery of the cursive body are brought into contact with each other to prevent the cursive body from flying out due to frictional force, the tail plug U
A coil spring (2) is installed on the Yuju bell.
14) There is no need to lock (141').Next,
Fountain pen body (One side of the two tail ends is cut out to form a step (C). Fountain pen body (24) Align the point (to) marked on the outer circumferential surface with the point (C) on the cap (9). When the tail end of the lever is inserted into the cap, the stepped part (c) comes into contact with the rear end of the mechanical pencil and presses down on the fountain pen body Q, compressing the coil spring Q4) and pushing the tip of the tip into the cap ( 7) to protrude from the tip opening (5) (Fig. 1). Part of the tapered tip of the mechanical pencil (
E) collides with the inner edge of the tip opening (5) of the cap body (7), so if the tail end is further pressed, the knock spring (5) is compressed and the internal charag mechanism is activated, allowing the lead to be fed out. be exposed. Conversely, if you align the fountain pen body (2nd point) C2al with the point (c) of the cap, insert the fountain pen body into the cap and press it, the tip of the ball mono brush will fit into the cap body circle in the same way as above. (Fig. 2). The holding force that keeps the tip of the cursive writing in the protruding state is due to the contact pressure between the outer circumferential surface of the fountain pen body 12 and the inner spring. In other words, the inward direction of the cap located on the outer periphery of the middle spring (C) and the outer periphery of the fountain pen body (C) have a slight taper shape, so that the inner surface of the middle spring (C) is the entire outer periphery of the fountain pen body Q. The contact pressure is increased and the holding force is guaranteed. In addition, when inserting the fountain pen body (24 pen nibs into the cap, as shown in Figure 3, the pen nibs are inserted without contacting the gap between the rear ends of each writing body, and the function as a cap is impaired. There is no problem as it can be fulfilled without any problems.

As described above, the present invention allows a plurality of writing bodies such as mechanical pencils and ballpoint pens to be mounted inside the cap with a simple structure, and it is possible to easily make the desired writing body stick out by suppressing it by the tail end of the fountain pen body. As a result, it is possible to provide consumers with products that are easy to manufacture and inexpensive, and also to provide extremely convenient effects by instantly providing users with the desired cursive font depending on the purpose of use. It is something that you have.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view of a mechanical pencil in a protruding state, Fig. 2 is a longitudinal sectional view of a ballpoint pen in a protruding state, and Fig. 3 is a longitudinal sectional view of a ballpoint pen in a protruding state. FIG. 3 is a vertical cross-sectional view of the fountain pen with the nib inserted. (1)...Female thread, (2)...Tip tube part, (3)...
... Rear end cylinder part, (4) ... Cylinder body part, (5) ... Tip opening, (6) ... Female thread, (7) ... Mouthpiece body, (8)
...Clip, (9)... Cap, aat ae' ... hole, ■...
guide body. α2...female thread, α rise...inner diameter step, a41am'
...Coil spring, (1 (1 phrase','□
, 4 grooves, (le... mechanical pencil, same... ballpoint pen, QlG(lal'... groove, H01'
...Tail plug, Shi0...Lead cleaning bottle, Circle...Eraser, @...Fountain pen, □□□...Double section, (Foundation)...
Point, (c)...point, kiln...tipped tapered part, η...knock spring, (c)...point, (c)...middle spring. Patent applicant Hiroshi Sano

Claims (1)

[Claims] The tip of the head is open, and multiple writing instruments such as a mechanical pencil and a ballpoint pen are pressed backwards by a coil spring and attached to the inside of the fountain pen cap, and a stepped section at the tail end of the barrel of the fountain pen body is attached to the fountain pen cap. By inserting the tail end of the shaft cylinder into the cap and pressing the stepped part selectively against the rear end of the desired writing body, the tip of the brush is made to protrude from the head end opening of the cap. A double writing instrument characterized by: