JPH03126598A - Composite writing utensil - Google Patents

Abstract

PURPOSE:To make writing easy by making a lead point or pen point easy to look by thinning the outer diameter of the rear end part of an outer cylinder by the simple alteration of planning by respectively inserting three or more writing stem bodies in three or more through-holes provided to a holding body in an anisometric shape and the guide grooves continued thereto. CONSTITUTION:Three or more writing stem bodies 4a, 4b... are respectively inserted in three or more through-holes 2a, 2b... arranged to a holding body 1 in an anisometric shape and the guide grooves 3a, 3b... continued thereto. Sliders 7a, 7b... are respectively provided to the writing stem bodies 4a, 4b... and elastomers 8a, 8b... are interposed between the sliders 7a, 7b and the front stoppers 6a, 6b... of the respective guide grooves 3a, 3b... The outer cylinder 9 covering the respective writing stem parts 4a, 4b... is mounted to the holding body a and a cam 14 consisting of inclined surfaces 11, 13 successively sliding the sliders 7a, 7b... against the elastomers 8a, 8b... to allow the leading end parts 4a1, 4b1... of the writing stem bodies 4a, 4b to go in and out of the leading end access port 9a of the outer cylinder 9 and an engaging part 12 holding the leading end parts 4a1, 4b1... of the writing stem parts 4a, 4b... is provided to the inner surface of a cap 10.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention enables writing of multiple writings of different colors or of the same color or of the same type by rotating the cap in one direction or the other until it hits a stopper. The present invention relates to a composite writing instrument in which the tip of the shaft body can be sequentially moved in and out of the tip of the outer cylinder.

[Prior art]

This type of conventional composite writing instrument has a structure in which, for example, by rotating the cap clockwise or counterclockwise, the two writing shafts can be alternately moved in and out of the opening at the tip of the outer cylinder.

[Problem to be solved by the invention]

However, in this conventional example, the number of writing shafts is limited to two and it is difficult to use more writing shafts. In other words, when the tip of one writing shaft moves in the protruding direction by rotating in one direction, the tip of the other writing shaft moves in the retracting direction. There is a risk that they will coincide in position within the tip of the outer tube and come into contact with each other and cause interference.To avoid this, it is necessary to increase the inner diameter and the outer diameter of the tip of the outer tube. , there was a problem that the pen tip became difficult to see, making it difficult to write.

Furthermore, a method is provided in which a rotary cam is arranged at the rear part of the cap, and by rotating and knocking operations, the positions of both writing shafts are coincident on the tip side or within the tip of the outer cylinder, thereby preventing mutual contact and interference. However, the problem was that the structure would become even more complex than it is now, making it inconvenient to use and increasing costs.

[Means to solve the problem]

In order to solve the above-mentioned problems, the composite writing instrument of the present invention has the following features:
3 arranged in an asymmetrical shape on the holding body 1 as shown in the second figure.
Three or more writing shafts 4a, 4b... are inserted into the three or more through holes 2a, 2b... and the guide grooves 3a, 3b... connected to these, respectively. Then, these writing shafts 4a = 4b...
Sliders 7a, 7b... are provided, and stoppers 6a, 6b for each slider 7a, 7b... and each guide groove 3a3b...
The elastic bodies 8a, 8b, etc. are inserted between the outer cylinders 9, which cover the writing shafts 4a, 4b, and so on.
are attached to the holder 1, and on the inner surface of the cap 10, each slider 7a, 7b... is sequentially fitted with an elastic body 8a,
8b...... by sliding it against each writing shaft body 4.
a, 4b... tip portions 4a+, 4b+・
. . . from the tip entrance/exit 9a of the outer cylinder 9, and the respective writing shafts 4a, 4b.
The configuration includes a cam 14 consisting of a locking B12 that holds the tip end portions 4a+, 4t], . . . in a protruding state.

[For production]

When the cap 10 is rotated in one direction with respect to the outer cylinder 9, the writing shaft 4a and its slider 7a are pushed against the elastic body 8a by the inclined surface 11 of the cam 14 provided on the inner surface of the cap 10, and the through hole 2a and the guide groove are rotated. 3a, and with the slider 7a locked in the locking part 12, the writing shaft body 4a
The distal end 4a of is in a state of protruding from the distal end opening 9a of the outer cylinder 9, and can be used for writing.

At this time, if the protrusion 16 of the cap 10 does not hit the detent 15 of the holder 1, if the cap 10 is further rotated in the same direction, the slider 7a will be released from the locking part 12, and the writing shaft 4a will be separated from the slider 7a. The rider 7a moves rearward along the inclined surface 13 by the elastic force of the elastic body 8a, and the tip 4a of the writing shaft 4a is retracted from the tip opening 9a of the outer cylinder 9.

Thereafter, by similarly rotating the cap 10 in the same direction, the tips 4a+ -4b+ of three or more writing shafts 4a, 4b, . The writing shafts 4a, 4b, . . . can be used for writing in the protruding state.

When the protrusion 16 of the cap 10 hits the detent 15 of the holder 1 and the cap 10 is prevented from rotating, it rotates in the opposite direction to the above and each writing shaft body moves in and out until the rotation is stopped. , can be written in a protruding state.

Further, when the writing shaft is for a mechanical pencil, centering can be performed and writing can be performed in the same manner as in the past by knocking on the cap 10 with the tip protruding.

When the lead or ink is used up and the lead needs to be refilled, or when a writing shaft that has run out of ink is replaced with a writing shaft filled with ink, the outer cylinder 9 can be removed from the holder 1. , remove the writing shaft from its holding shaft in the same way as before, replenish the lead inside the holding shaft and fit the writing shaft into the holding shaft, or replace the writing shaft that has run out of ink with the holding shaft. It is also possible to replenish the lead or replace the writing shaft by pulling it out and instead fitting a writing shaft containing ink into the holding shaft.

In addition, the tip portions 4 of the writing shafts 4a, 4b...
a1, 4b+..., the cap 10 is prevented from rotating 1
5, the end opening 9a of the outer cylinder 9 is rotated in one direction or the other direction on the inclined surface 11 or 13.
The elastic body 8a = 8b protrudes further, maintains the protruding state at the locking part 12, and then moves along the inclined surface 11 or 13.
It will be gradually retracted due to the elastic force of... In this case, each writing shaft body 4a, 4b...
are through holes 2a, 2 arranged in an asymmetrical manner in the holding body 1.
b... and guide grooves 3a, 3 connected to these
b..., so each writing shaft 4a
Tips 4al, 4b+... of 4b...
Since they coincide within the tip of the outer cylinder 9 at a rear position than the conventional position, there is no risk of mutual contact and interference, and the outer diameter of the tip of the outer cylinder 9 can be made thinner with a simple design change. , the tip of the lead and the tip of the pen become easier to see, making it easier to write.

〔Example〕

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a partially exploded perspective view showing the structure of an embodiment of the composite writing instrument of the present invention, FIG. 2 is a vertical cross-sectional view thereof, FIG. 3 is a cross-sectional view of the cap of the present invention, and FIG. Side view of the holder, FIG. 5(a).

) are the arrow views on the lines ■a-■a and vb- in Fig. 4, respectively.
The cross-sectional view taken along the vb line and FIG. 6 are explanatory views of the operation inside the tip portion of the present invention.

First, its configuration will be explained.

In FIGS. 1 to 3, reference numeral 1 denotes a holding body, which has a plurality of through holes 2a to 2c, for example, three through holes, and guide grooves 3a to 3 connected to these through holes 2a to 2c.
C, which are arranged in an isosceles triangle shape.
(See Figures 5(a) and (c)). Each of the through holes 2a to 2G and the guide grooves 3a to 3C connected thereto each have a plurality of grooves, and in this embodiment, one different color, for example, blue.

The rear portions of a total of three writing shafts, two red ballpoint pen writing shafts 4a and 4c and one mechanical pencil writing shaft 4b, are inserted. The mechanical pencil writing shaft 4b is fitted onto a holding shaft 4b2 at the rear thereof, and the other ballpoint pen writing shaft 4a4C is similarly fitted onto the holding shaft 4a2+4C2.

Sliders 7a to 7C are provided at the rear of these writing shafts 4a to 4C, respectively, and move within each guide groove 3a to 3C against or by the spring force of springs 8a to 8C. Spring 8a-8C is inserted between each guide groove 3a-3C and front stopper 6a-6c. Outer cylinder 9 that covers the front part of each writing shaft 4a to 4C
is screwed onto the holder 1, and a cap 10 is attached to the rear outer periphery of the holder 1 so as to be rotatable in one direction or the other until it hits a detent 15.

In this embodiment, one of each guide groove 3a to 3C of the holder 1 is
A rotation stopper 15 is provided in each of the two partitions, and protrusions 16 are provided on the inner surface of the cap 10 as shown in the third figure to oppose both sides of the rotation stopper 15 and restrict the rotation of the cap 10. A cap 10 is attached from the rear of the holder 1 so as to be rotatable in one direction or the other until the cap 16 hits the detent 15.

On the inner surface of the cap 10, sliders 7a to 7c are sequentially slid against or by the spring force of springs 8a to 8C, and tips 4a+ to 4c+ of each writing shaft 4a to 4c are attached.
an inclined surface 11° 13 that allows the writing shafts to protrude and retract from the tip opening 9a of the outer cylinder 9, and tip portions 4a+ to 4c+ of each writing shaft 4a to 4C.
A bamboo-shaped cam 14 consisting of a locking portion 12 that holds the cam in a protruding state is provided.

At the rear of the holding body 1, there is a corner-shaped part 2 having a slit 20.
1, and the inner surface of the cap 10 is provided with an annular portion 21.
An engaging portion (hole) 22 that engages is provided. In this embodiment, as shown in the second figure, an eraser holder 23 is detachably attached to the rear inner surface of the cap 10, and the protrusion 17 engages with the center of the annular portion 21.
A jig hole 24 is provided on the bottom side of the jig, which is used when releasing the engagement between the annular portion 21 and the engaging portion 22 . The eraser holder 23 may be screwed onto the cap 10.

25 is a clip whose base end is fitted into a fitting hole 28 provided at the rear of the cap 10; 26 is an eraser fitted into the eraser holder 23; and 27 is an eraser cover attached to the eraser holder 23.

Next, its effect will be explained.

FIG. 6 is an explanatory diagram of the operation of the writing shaft body in the present invention.

When the projection 16 of the cap 10 is not in contact with the detent 15 of the holder 1 (when the tips 4at to 4c+ of any of the writing shafts 4a to 4C are retracted), the cap is attached to the outer cylinder 9. 10 in one direction, in this example,
When rotated clockwise, the rotation operation of the cap 10 is not obstructed, so the blue ballpoint pen writing shaft 4a and its slider 7a are moved by the spring 8a by the inclined surface 11 of the bamboo-saw-shaped cam 14 provided on the inner surface of the cap IO. The tip B 4 a + of the writing shaft 4 a moves forward along the through hole 2 a and the guide groove 3 a against the movement of the slider 7 a and the slider 7 a is locked to the locking portion 12 of the cam 14 . The tip protrudes from the entrance/exit 9a (see FIGS. 2 and 6), and can be written in one color, blue. In this case, the tip 4c+ of the writing shaft 4G and its slider 7C move rearward along the inclined surface 13 by the spring force of the spring 8C.

When the cap 10 is further rotated clockwise, the slider 7a is released from the locking portion 12 of the cam 14, and the writing shaft 4a and its slider 7a are moved backward along the inclined surface 13 of the cam 14 by the spring force of the spring 8a. As a result, the tip 4a of the writing shaft 4a is retracted from the tip opening 9a of the outer cylinder 9.

When cap 10 is further rotated clockwise, cap 1
The next mechanical pencil writing shaft 4b and its slider 7b move forward along the through hole 2b and guide groove 3b against the spring 8b by the inclined surface 11 of the cam 14 provided on the inner surface of the cam 14. With the slider 7b locked in the locking part 12 of the writing shaft 4b, the tip 4b+ of the writing shaft 4b protrudes from the tip opening 9a of the outer cylinder 9, and in this state, by performing the knocking operation of the cap IO. As before, the lead can be drawn out to a predetermined maximum and writing can be performed. At this time,
The protrusion 16 of the cap 10 hits against the rotation stopper 15 of the holder 1 to restrict clockwise rotation.

It is not necessary to retract the drawn-out lead, but when retracting the lead, it can be done by pushing the tip of the lead in the knocking state.

Next, when the cap 10 is rotated counterclockwise, the cam 14
The slider 7b is released from the locking portion 12 of the writing shaft 4b.
and its slider 7b are moved to the cam 14 by the spring force of the spring 8b.
The tip 4b of the writing shaft 4b moves backward along the inclined surface 11 of the writing shaft 4b, and the outer cylinder 9 moves along the inclined surface 11 by the spring 8b.
It will be retracted from the tip entrance/exit 9a.

When the cap 10 is further rotated counterclockwise, the cam 14
The writing shaft 4a and its slider 7b move forward along the through hole 2b and the guide groove 3b against the spring 8b due to the inclined surface 13, and the slider 7b is locked in the locking part 12 of the cam 14. The tip 4b of the writing shaft 4b is the outer cylinder 9.
The tip protrudes from the entrance/exit 9a, and writing can be done in the same way.

When the cap 10 is further rotated counterclockwise, the cam 14
The slider 7a is released from the locking portion 12, and the writing shaft 1 4
a and its slider 7a move backward along the inclined surface 11 of the cam 14 by the spring force of the spring 8a, and the writing shaft 4a
The distal end portion 4a is retracted from the distal end opening 9a of the outer cylinder 9 along the inclined surface 11 by the spring 8a.

When the cap 10 is further rotated counterclockwise, the cam 14
The inclined surface 13 allows the next writing shaft 4c and its slider 7 to
C moves forward along the through hole 2c and the guide groove 3c against the spring 8C, and the slider 7 is attached to the locking portion 12 of the cam 14.
In the locked state, the tip 4c+ of the writing shaft 4C protrudes from the tip opening 9a of the outer tube 9, allowing writing in one color, red. At this time, cap 10
The protrusion 16 contacts the rotation stopper 15 of the holder 1 and restricts rotation in the counterclockwise direction.

Thus, the tips 4a+ to 4c of the writing shafts 4a to 4C.

By rotating the cap 10 clockwise or counterclockwise until the protrusion 16 hits the stopper 15, the cap 10 can be sequentially inserted and retracted from the tip opening 9a of the outer cylinder 9 on the inclined surface 11 or 13 of the bamboo-shaped cam 14. The protruding state is maintained by the locking portion 12 at the tip of the bamboo-shaped cam 14, and writing can be performed using each of the writing shafts 4a to 4C.

Next, the tip portions 4a+ to 4c+ of the writing shafts 4a to 4C are retracted along the inclined surface 11 or 13 by the spring force of the springs 8a to 8C.

When the lead or ink is used up and the lead needs to be replenished, or when replacing the ballpoint pen writing shaft 4a or 4C that has run out of ink with a ballpoint pen writing shaft filled with ink, the outer cylinder 9 is On the other hand, when the cap 10 is rotated counterclockwise with a strong force, the cap 10 and the holder 1 become one, and by rotating together, the outer cylinder 9 is unscrewed from the holder 1 and removed. This outer cylinder 9
By removing the writing shafts 4a, 4b, 4c for mechanical pencils and ballpoint pens, the writing shafts 4a, 4b, 4c are removed from the holding shafts 4a2.4b2°4C2 as before, and the holding shafts 4b2 are removed.
Replenish the lead and insert the writing shaft 4b into the holding shaft 4bz, or pull out the ballpoint pen writing shaft 4a or 4C that has run out of ink from its holding shaft 4a2 or 4C2 and fill it with ink instead. Place the ballpoint pen writing shaft 4a = 4c into its holding shaft 4a2. 4C2
By fitting it into the ballpoint pen writing shaft 4a, you can replenish the lead or write the ballpoint pen.

4C exchange can be performed.

In addition, if the manufacturer has a problem with the sliders 7a to 70 and needs to remove the cap 10, remove the eraser cover 27, pull out the eraser holder 29, and then remove the eraser from the cylindrical part of the jig. When it is inserted and pressed through the jig hole 24, the annular portion 21 is pushed inward using the slit 20, and the cap 10 is pulled out while disengaging from the engaging portion 22, and the sliders 7a to 7c are The side part can be exposed and the problem can be solved.

In addition, the three writing shafts 4a to 4c are inserted into the through holes 2a to 2c arranged in the shape of an isosceles triangle in the holder 1 and the guide grooves 3a to 3c connected to these, so that each writing shaft Since the tips 4a and 4c of the bodies 48 to 4c match within the tip of the outer cylinder 9 at a position rearward from the conventional position, there is no risk of mutual connection and interference, and a simple design change is possible. This allows the outer diameter of the rear end of the outer cylinder 9 to be made thinner, making it easier to see the tip of the lead and the tip of the pen, making it easier to write.

〔Effect of the invention〕

As described above, according to the present invention, three or more writing shafts 4a
, 4b... are three or more through holes 2a, 2b... provided in an asymmetrical shape in the holding body 1.
and guide grooves 3a, 3b connected to these, respectively, so that each writing shaft body 4a, 4b
Since the tips 4a+, 4b+, . . . of . Not only can the outer diameter of the rear end of the outer cylinder 9 be made thinner with a simple design change, making it easier to see the tip of the lead and the pen tip for easier writing, but also by rotating the cap 10 in one direction or the other. A plurality of writing shafts 4a, 4b, . . . can be sequentially retracted and retracted from the tip opening 9a of the outer cylinder 9, and can be used for writing.

Furthermore, by removing the outer cylinder 9 from the holder 1, it is not only possible to replenish the leads of the writing shafts 4a, 4b, etc., or replace the writing shafts;
By releasing the connection between the cap 10 and the cap l
O can be removed to solve problems such as problems with the side parts of the sliders 7a - 7b of each writing shaft 4a, 4b, etc., and in this case, each writing shaft 4a
, 4b... has the advantage that there is no risk of twisting.

[Brief explanation of the drawing]

FIG. 1 is a partially exploded perspective view showing the structure of an embodiment of the composite writing instrument of the present invention, FIG. 2 is a vertical cross-sectional view thereof, FIG. 3 is a cross-sectional view of the cap of the present invention, and FIG. A side view of the holding body, FIGS. 5(a) and 5(b) are a view taken along the line Va--Va in FIG. 4, and a sectional view taken along the line VB-VB in FIG. 4, respectively. FIG. 6 is an explanatory diagram of the operation inside the tip portion in the present invention. 1...Holding body, 2a, 2b...Through hole, 3a, 3b...Guide groove, 4a,
4c... (for ballpoint pen) writing shaft, 4h...
... (For mechanical pencil) Writing shaft, 4a14
b,...Tip, 4a2. 4b2...
・Holding shaft, 6a, 6b... (front) stopper, 7a, 7b... slider, 8a8b...
...Elastic body (spring), 9...Outer cylinder, 9a...
... Tip entrance/exit, IO... Cap, 11.
... Slanted surface, 12 ... Locking part, 13 ...
... Inclined surface, 15 ... Stop rotation, 16 ...
...Protrusion, 20...Slit, 21...
...Anchor-shaped part, 22...Engagement part. Jun 3rd circle photo θth

Claims (5)

[Claims] (1) Three or more through holes (2a, 2b...) arranged in an asymmetrical shape in the holder (1) and guide grooves (3a, 3b...) connected to these through holes (2a, 2b...) Insert three or more writing shafts (4a, 4b...) into each of the writing shafts (4a, 4b...), and insert a slider (7a, 7a,...) into each of these writing shafts (4a, 4b...). 7b...), and each slider (7a, 7b...) and each guide groove (3
a, 3b...) stopper (6a, 6b...)
...) between the elastic bodies (8a, 8b...)
The outer cylinder (9) that covers each writing shaft (4a, 4b...) is attached to the holder (1), and the cap (10
), each slider (7a, 7b...)
are sequentially slid against the elastic bodies (8a, 8b...), and the tips (4a_1, 4b_1...) of each writing shaft (4a, 4b...) are ) to the outer cylinder (9)
The inclined surface (11, 1
3) and a cam ( 14) A composite writing instrument. (2) Three through holes (2a to 2c) into which three writing shafts (4a to 4c) are inserted and three guide grooves (3a to 3c) connected to these are held in an isosceles triangular shape. The composite writing instrument according to claim 1, wherein the composite writing instrument is arranged on a body (1). (3) A detent (15) is provided on the holder (1), and the projections (16) that come into contact with both sides of the detent (15) to restrict rotation of the cap (10) are attached to the inner surface of the cap (10). The composite writing instrument according to any one of claims 1 and 2, which is provided in a. (4) A claim in which an annular portion (21) is provided at the rear of the holder (1), and an engaging portion (22) with which the annular portion (21) engages is provided on the inner surface of the cap (10). The composite writing instrument according to any one of Items 1 and 2. (5) An annular portion (21) is provided at the rear of the holder (1), and an engaging portion (22) with which the annular portion (21) engages is provided on the inner surface of the cap (10). shape part (
2. The composite writing instrument according to claim 1, wherein a part of the eraser holder (23) is inserted into the center of the eraser holder (21).