JP2004025780A - Multi-lead writing utensil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-lead writing utensil, the push button action of which is easy even in the case that the same color is repeatedly used, in the multi-lead writing utensil, the writing tip part of which can be selectively retracted and extended through the tip opening part of a barrel by pressing a push button member arranged at the rear end of the barrel. <P>SOLUTION: In the multi-lead writing utensil, the writing tip part of which can be retracted and extended through the tip opening part of the barrel by pressing only one among a plurality of writing bodies at a position eccentric to the axis center of the barrel with the pressing part of the push button member on the pressing part of the pressing member interlocking with the push button member by pressing the push button member arranged at the rear end of the barrel with a plurality of the writing bodies arranged therewithin, a holder member rotatable against the barrel is arranged in the barrel and, at the same time, the writing bodies are arranged rotatable accompanied by the rotation of the holder member. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a multi-core writing instrument in which a plurality of writing bodies are arranged in a barrel, and more specifically, by pressing a knock member provided at a rear end of the barrel, the writing body of the writing body is pressed. The present invention relates to a multi-core writing instrument that allows a writing tip to selectively emerge from a tip opening of the barrel.
[0002]
[Prior art]
Conventionally, a plurality of writing bodies are arranged in a barrel, and by pressing a knock member arranged at the rear end of the barrel, a writing tip of the writing body is selected from a tip opening of the barrel. Multifilament writing instruments that can appear and disappear are well known.
[0003]
In such a multi-core writing instrument retracting mechanism, the pendulum member interlocking with the knock member is used for disposing a plurality of cursive members, so that the pendulum member is disposed at an eccentric position with respect to the axis of the barrel. And a pendulum-type multi-core writing instrument that is always positioned in the direction in which gravity is applied regardless of the rotation of the pendulum and can selectively penetrate a writing body disposed at a position facing the pendulum. As disclosed in the "composite writing instrument", the rotating cam function rotates the pushing portion interlocked with the knock member, and allows the pushing portion to selectively emerge from the distal end opening of the barrel.
[0004]
[Problems to be solved by the invention]
However, the conventional multi-core writing implement is, for example, when a two-color writing body such as black and red is disposed in a shaft cylinder, a pendulum-type multi-core writing implement is a writing body at a position facing the pendulum, for example, When black cursive fonts appeared and appeared, even when the same color was used repeatedly, it was necessary to set the barrel to the position where black cursive letters appeared and appeared (the direction in which the pendulum was placed on the black cursive font). . In addition, the rotary cam function rotates the pusher interlocking with the knock member, and the multi-core writing instrument that can selectively appear and disappear from the tip opening of the barrel has a black writing body that appears and then reappears. In order to make the cursive character of protrude, it was necessary to make the red cursive character appear and disappear once.
[0005]
In view of the above problem, the present inventor presses a knock member disposed at the rear end of the barrel to allow the writing tip of the writing body to be selectively protruded and retracted from the tip opening of the barrel. It is an object of the present invention to provide a multifilament writing implement that can easily knock even when the same color is repeatedly used.
[0006]
[Means for Solving the Problems]
The present invention provides a plurality of writing bodies in a barrel, and by pressing a knock member provided at a rear end of the barrel, a pressing portion of the knock member or a pressing portion of a pressing member interlocked with the knock member. However, at a position eccentric with respect to the axis of the barrel, and pressing only one of the plurality of writing bodies, the writing tip of the writing body is a multi-core writing tool that can protrude and retract from the tip opening of the barrel. In addition, a holder member rotatable with respect to the shaft cylinder is disposed on the shaft cylinder, and the writing body is also rotatably disposed with the rotation of the holder member.
[0007]
In addition, the distal end opening of the barrel is formed at a position eccentric with respect to the axis of the barrel, and the distal opening of the barrel, a writing member and a pressing member interlocking with the pressing portion or the knocking member of the knocking member. Are arranged on the same axis.
[0008]
Further, the writing body is a ball-point pen body containing a low-viscosity oil-based ink or an ink provided with shear thinning.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
In the multi-filament writing instrument 1 of the present invention, a rear shaft 3 is screwed to a rear end of the front shaft 2 to form a shaft cylinder. In the rear shaft 3, a holder member 4 is formed on the holder member 4. By fitting over the mating projection 4a and the engagement projection 3b formed in the rear shaft 3, the holder member 4 is rotatably disposed with respect to the rear shaft 3, and the holder member 4 is rotated with respect to the rear shaft 3 (FIG. 5 (in the direction of arrow F or M). Further, a grip member 19 is mounted on a grip portion of the front shaft 2.
[0010]
A black writing body 10 (ballpoint pen body) and a black writing ink are passed through the positioning hole 18a of the positioning member 18 attached to the holder member 4 in the shaft cylinder and the holder member 4. The body 13 (ballpoint pen body) is urged toward the rear end 3a of the rear shaft 3 by the resilient members 16 and 17 and stored. The cursive body 10 has a black ink (not shown) provided with a shear-thinning viscosity in the ink container and an ink follower (not shown) that follows the ink consumption at the rear end of the ink. The writing tip 11 (ballpoint pen tip) holding the ball in a rotatable manner is press-fitted to the tip of the ink storage cylinder. The cursive body 13 is similar to the cursive body 10 except that the ink color is red. It has a structure in which an ink follower (not shown) to be followed is accommodated, and a writing tip 14 (ballpoint pen tip) that rotatably holds a ball is press-fitted to the tip of the ink containing cylinder.
[0011]
In order to use the cursive writing 10, first, the holder member 4 is rotated from the window 5 (in the direction of arrow F or M in FIG. 5), and the arrow 20 displayed on the outer peripheral surface of the rear shaft 3 and the holder member 5 are displayed. The black (BLACK) arrow 22 is matched. At this time, the pressing portion 8a of the pressing member 8 is located at the rear end of the writing body 10. Next, the knock member 6 urged in the direction of the rear end 3a of the rear shaft 3 by the coil spring 9 is pressed in the direction of the front end opening 2a of the front shaft, so that the rotating cam 7 interlocked with the knock member 6 becomes a cam groove ( The pressing member 8a of the pressing member 8 that operates in the forward direction while rotating along the notch (not shown) and is linked only to the operation in the front-rear direction of the rotary cam 7 is a pressed member attached to the rear end of the writing body 10. 12, the writing tip 11 of the writing body 10 is made to protrude from the tip opening 2a. Although not shown, the pressing member 8 has the protrusion 8b of the pressing member 8 loosely fitted in the groove 3d formed by the protrusion 3c formed in the rear shaft 3 so as to be slidable in the axial direction. ing.
[0012]
Thereafter, in order to use the writing body 13, the knock member 6 is again pressed in the direction of the tip opening 2a, and the writing tip 11 of the writing body 10 is immersed from the tip opening 2a by the action of the rotating cam 7, and then Then, the holder member 4 is rotated (in the direction of arrow F or M in FIG. 5) so that the arrow 20 displayed on the outer peripheral surface of the rear shaft 3 matches the red arrow (not shown) displayed on the holder member. At this time, the writing bodies 10 and 13 also rotate with the rotation of the holder member 4, and the pressing portion 8a of the pressing member 8 is located at the rear end of the writing body 13. Next, by pressing the knocking member 6 in the direction of the tip opening 2a, the pressing portion 8a of the pressing member 8 presses the pressed member 15 attached to the rear end of the writing body 13, and the writing tip 14 protrudes. Can be used.
[0013]
When the same color (red) is repeatedly used even when the writing tip 14 of the writing body 13 is once immersed from the tip opening 2a, the knock member 6 may be pressed in the direction of the barrel tip opening 2a. Although not shown, even when a clip member is integrally formed or attached to the rear shaft 3, the same color (red) is repeatedly used irrespective of the rotational position (position where gravity is applied) of the barrel during writing. can do.
[0014]
In the present embodiment, the holder member 4 is rotatably disposed with respect to the rear shaft 3 by the overriding fit of the engagement protrusion 4a formed on the holder member 4 and the engagement protrusion 3b formed in the rear shaft 3. However, the arrangement method is not particularly limited. In addition, the writing bodies 10 and 13 are rotatably disposed along with the rotation of the holder member 4 by passing through the positioning holes 18 a of the positioning member 18 attached to the holder member 4. However, as long as the writing bodies 10 and 13 rotate with the rotation of the holder member 4, the method of disposing the writing bodies 10 and 13 is not particularly limited.
[0015]
As shown in FIG. 1, the tip opening 2 a of the front shaft 2 is eccentric with respect to the axis J of the barrel, and the tip opening 2 a of the front shaft 2, the writing body 10, and the pressing member 8 are pressed. By arranging the portion 8a so as to be located on the same axis K, the writing tip 11 of the writing body 10 comes and goes along the axis K without tilting. This is preferable because it does not contact the inner wall of the front shaft 2 and does not stain the inner wall surface of the front shaft 2. In particular, when the writing body is a ball-point pen body containing low-viscosity oil-based ink or ink provided with shear thinning, the effect is particularly remarkable because the inner wall surface of the barrel is easily stained. Further, the writing tip 11 of the writing body 10 does not tilt and protrudes and retracts along the axis K, so that the plurality of writing bodies 10 and 13 do not interfere with each other, which is preferable.
[0016]
In this embodiment, for the sake of convenience, a retracting mechanism using a rotating cam is used, but by pressing a knock member at the rear end of the barrel, the writing tip of the writing body is moved from the tip opening of the front shaft. There is no particular limitation as long as it can selectively appear.
[0017]
The writing body used in the multifilament writing instrument of the present invention is not particularly limited, such as a ballpoint pen and a mechanical pencil, and furthermore, the ballpoint pen of the above-described embodiment is limited to two multifilament writing instruments. However, the present invention can be used for generally known multi-core writing instruments such as three or four ballpoint pens, a mechanical pencil and a ballpoint pen, or three mechanical pencils.
[0018]
【The invention's effect】
Since the present invention has the above-described configuration, it is possible to provide a multi-core writing instrument that can easily knock even when the same color is repeatedly used.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a multi-core writing instrument according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a state in which the writing body in FIG. 1 is projected.
FIG. 3 is an external view showing a multi-core writing instrument according to an embodiment of the present invention.
FIG. 4 is an enlarged sectional view of a main part of FIG. 1 with a part omitted.
FIG. 5 is an enlarged sectional view taken along the line AA in FIG. 1;
FIG. 6 is an enlarged sectional view taken along line BB in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Multi-core writing implement 2 Front shaft 2a Front opening 3 Rear shaft 3a Rear end 3b Engagement projection 4 Holder member 4a Engagement projection 5 Window 6 Knock member 7 Rotating cam 8 Press member 8a Press section 9 Coil springs 10, 13 Writing body 11, 14 Writing tip 12, 15, Pressed member 16, 17, Coil spring 18, Positioning member 19 Grip member 20, Display unit 21 of barrel tube Display unit of holder J, Center of shaft K, Center of shaft K

Claims (3)

By disposing a plurality of writing bodies in the shaft cylinder and pressing the knock member disposed at the rear end of the shaft cylinder, the pressing portion of the knock member or the pressing portion of the pressing member interlocking with the knock member, the shaft cylinder At a position eccentric with respect to the axis of the, and press only one of the plurality of writing bodies, a writing tip of the writing body, a multi-core writing tool that can appear and disappear from the tip opening of the barrel, A multi-core writing implement, wherein a holder member rotatable with respect to the shaft cylinder is disposed on the shaft cylinder, and the writing body is also rotatably disposed with the rotation of the holder member. The tip opening of the barrel is formed at a position eccentric with respect to the axis of the barrel, and the tip opening of the barrel, the pressing portion of the writing body and the knock member, or the pressing of the pressing member interlocking with the knock member. The multi-core writing instrument according to claim 1, wherein the portions are arranged on the same axis. The multi-filament writing instrument according to claim 2, wherein the writing body is a ballpoint pen body containing low-viscosity oil-based ink or ink provided with shear thinning.

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