JPS63191697A - Writing utensil - 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 [Field of Industrial Application] The present invention relates to a writing instrument such as a rotary mechanical pencil, a rotary ballpoint pen, or a rotary knock-type mechanical pencil.

[Prior art]

The present inventors developed a rotary type in which, by rotating the cap, the refill is moved back and forth according to the rotational direction using a rotation-backward movement conversion mechanism, and the tip of the refill is made to protrude and retract from the tip of the outer cylinder. The tip of a ballpoint pen or similar refill is made to protrude and retract from the tip of the outer cylinder 1, and the chuck constituting the refill is removed by knocking the cap with the tip of the refill protruding from the tip of the outer cylinder. Utility Model Application No. 60-204385 and Utility Model Application No. 61-109562 for a rotary knock-type mechanical pencil that can be opened and closed for centering.

It has already been proposed as Utility Application No. 153038/1983.

[Problem that the invention seeks to solve]

However, in the rotary ballpoint pen of the above-mentioned prior art, there is a problem in that even if you use a mechanical pencil and feel instead of a ballpoint pen and a feel, the lead cannot come out.In other words, there is a problem that the ballpoint pen and mechanical pencil are not compatible. .

In addition, the rotary type mechanical pencil of the prior art is
A gap for knocking is provided in advance between the rear end of the outer cylinder and the head of the cap to allow knocking.
There was also the problem that it spoiled the appearance and made it impossible to obtain a smart design.

[Means for solving problems]

A first object of the present invention is to provide a compatible writing instrument that has the same configuration and can be used as a rotary ballpoint pen or a rotary mechanical pencil by simply changing the feel for a ballpoint pen and the feel for a mechanical pencil. That's true.

The second object of the present invention is to use a rotary knock-type ballpoint pen with the same configuration that can be used as a rotary ballpoint pen by rotating the ball-point pen so that a gap for the knocking allowance is formed between the rear end of the outer cylinder and the cap head by rotating the pen. To provide a compatible writing instrument that can also be used as a mechanical pencil.

That is, in order to achieve the first purpose of the first writing instrument of the present invention,
As shown in FIGS. 1 to 4, a refill 2 is housed in an outer cylinder 1, and a slider 4 having a protrusion 3 on the outer surface is fitted to the rear end of the refill 2. , and a rotary cap 5 fitted into the rear end of the outer cylinder 1 so as to be rotatable but immovable in the axial direction has a spiral slit 6 for a knocking allowance, and a spiral slit 6 communicating with the spiral slit 6 to allow the tip of the refill 2 to be removed. A tip protrusion slit 7 is provided to protrude from the tip of the cylinder 1, and the outer cylinder 1 has an axial passage 8 for the knocking allowance, and the tip of the refill 2 is communicated with the axial passage 8 so that the tip of the refill 2 can be inserted from the tip of the outer cylinder 1. At least one of the tip protruding slit 7 and the tip protruding passage 9 is spirally shaped, and the protrusion 3 of the slider 4 is connected to the spiral slit 6 and the axis thereof. It has a structure in which it is slidably fitted into the directional passage 8 or the slit 7 for tip protrusion and the passage 9 for tip protrusion.

In order to achieve the second purpose, the second writing instrument of the present invention houses a refill 2 in an outer cylinder 1 as shown in FIGS. The rotary camp 5, which is fitted into the slider 4 and is fitted into the rear end of the outer cylinder 1 so as to be rotatable and movable in the axial direction by the amount of knocking, has a spiral corresponding to the amount of knocking. A shaped slit 6 and a tip protruding slit 7 that communicates with the spiral slit 6 and causes the tip of the refill 2 to protrude from the tip of the outer cylinder 1 are provided, and the outer cylinder 1 has an axial passage 8 for a knocking allowance; A tip protrusion passage 9 is provided which communicates with the axial passage 8 and causes the tip of the refill 2 to protrude from the tip of the outer cylinder 1, and at least one of the tip protrusion slit 7 and the tip protrusion passage 9 is formed into a spiral shape. In addition, the protrusion 3 of the slider 4 is slidably fitted into the spiral slit 6 and the axial passage 8 or the tip protrusion slit 7 and the tip protrusion passage 9. .

[For production]

In the first writing instrument, when the protrusion 3 of the slider 4 is located at the starting end of the tip protrusion slit 7 and the tip protrusion passage 9 as shown in FIG. 4(a), the head 5a of the rotary cap 5
When rotated in the positive direction shown in FIG. 4(b), the protrusion 3 of the slider 4 fitted into the tip protrusion slit 7 and the tip protrusion passage 9 rotates in the circumferential direction along these slits 7 and passage 9. Move forward in the axial direction while moving. Due to this movement, the tip 2a of the refill 2 protrudes from the tip of the outer cylinder 1.

At this time, the protrusion 3 of the slider 4 has a slit 7 for protruding the tip.
and the terminal end of the tip protruding passage 9, that is, the starting end position of the spiral slit 6 corresponding to the knocking allowance and the axial passage 8 corresponding to the knocking allowance. In the case of a ballpoint pen, writing can be performed using the ball held in the tip 2a of the protruding refill 2.

In the case of a mechanical pencil, if the head 5a of the rotary cap 5 is further rotated in the forward direction as shown in FIG. 4(C) at this position,
The protrusion 3 of the slider 4 is located at the starting end of the axial passage 8 corresponding to the knock allowance.
Since the protrusions 3 of the slider 4 are in contact with each other, the protrusion 3 of the slider 4 moves in the circumferential direction along the helical slit 6 corresponding to the knocking allowance, and is guided forward by the axial passage 8 corresponding to the knocking allowance. 10, and by releasing the rotational force on the head 5a of the rotating cap 5, the rotating cap 5 is moved rearward by the spring force of the spring 10. By repeating this operation, the chuck 11 constituting the refill 2 is opened and closed, and by opening and closing the chuck 11, the core 12 can be sent out by a predetermined length from the tip 2a of the refill 2.

The protruding lead 12 allows writing.

When the protrusion 3 of the slider 4 is located at the starting end of the helical slit 6 corresponding to the knocking allowance and the axial passage 8 corresponding to the knocking allowance, that is, at the end point of the tip protruding slit 7 and the tip protruding passage 9, When the slider 4 rotates, the protrusion 3 of the slider 4 moves backward in the axial direction while moving in the circumferential direction along the slit 7 and the passage 9. This movement causes the tip 2a of the refill 2 to be retracted from the tip of the outer cylinder 1. At this time, the protrusion 3 of the slider 4 is at the starting point position of the tip protrusion slit 7 and the tip protrusion passage 9.

In addition, in the case of a ballpoint pen as the second writing instrument, the tip 2a of the refill 2 can be protruded from the tip of the outer sleeve and can be retracted in the same manner as described above (Fig. 4 (a), (b) )reference).

In the case of a mechanical pencil, when the head 5a of the rotary cap 5 is rotated in the forward direction with the tip 2a of the refill 2 protruding from the tip of the outer cylinder 1 as shown in FIG. 4(b), the knocking amount is reduced. Since the protrusion 3 of the slider 4 is in contact with the starting end of the axial passage 8, the protrusion 3 of the slider 4 moves in the circumferential direction along the spiral slit 6 corresponding to the knocking amount, and the rotating cap is moved by the amount of the knocking amount. 5 will be moved backwards. That is, by widening the annular groove 21 into which the annular protrusion 22 is fitted by the knocking distance, the rotary cap 5 is moved rearward by the knocking distance (see FIG. 6).

If you knock the rotary cap 5 in this state, the slider 4
The protrusion 3 of the rotary cap 5 moves forward in the axial passage 8 corresponding to the knock allowance. The chuck 11 is opened and closed by moving the slider 4 and the refill 2 forward against the spring 10 by the knocking distance, and by moving the slider 4 and the refill 2 backward by the spring force of the spring 10. It can be sent out one by one. In order to retract the tip 2a of the refill 2, the head 5a of the rotary cap 50 can be rotated in the opposite direction.

〔Example〕

The present invention will be described in detail below based on the drawings.

FIG. 1 is a vertical cross-sectional view showing an embodiment of the first writing instrument of the present invention, and FIGS. 2(a) and (b) are an external view and a vertical cross-sectional view of an example of the slider used in the present invention, respectively. Third
Figures (a) and (b) are external views showing two examples of rotary caps used in the present invention.

In FIG. 1, 1 is an outer cylinder, and 2 is a refill housed in the outer cylinder 1. In the case of a ballpoint pen, this refill 2 consists of an ink tank and a distal end that is connected to the ink tank and holds a ball at the tip, and in the case of a mechanical pencil, it consists of a lead tank 13 and a tip that is connected to the lead tank 13 as shown in the first figure. The chuck 11 and the chuck ring 14 fitted thereto are inserted between the chuck ring 14 and the outer cylinder 1, and are brought into contact with the inner step 15 of the outer cylinder 1 to form a shaft tip (refill). 2
2a is a shaft body 16 that protrudes from the front end of the outer cylinder 1, and a chuck ring sleeve 17 that is screwed onto the rear part of this shaft body 16 and locks the rear end of the chuck ring 14.
and a spring 10 inserted between the sleeve 17 and the core tank 13.

4 is a slider fitted to the rear outer periphery of the core tank 13 constituting the refill 2, and has a projection 3 at the rear of the outer surface (
(See Figure 2). Reference numeral 5 denotes a rotary cap fitted onto the outer periphery of the slider 4. The rotary cap 5 has an axial slit 18 into which the protrusion 3 of the slider 4 is inserted from the front end, a spiral slit 6 communicating with the slit 18, and a refill 2 communicating with the slit 6.
a slit 7 for protruding the tip of the outer cylinder 1 from the tip of the outer cylinder 1; and a circumferential slit 19 communicating with the slit 7.
An axial slit 18 and a spiral slit 6 are provided.
An inner surface protrusion 20 is provided between the (Fig. 3(a)
(see l).

The slider 4 and the rotary cap 5 are connected with each other with the protrusion 3 of the slider 4 inserted through the axial slit 18 of the rotary camp 5 and fitted beyond the inner protrusion 20. An annular groove is formed on one side of the rotary cap 5 slightly rearward of the circumferential slit 19 and on the inner surface of the outer cylinder 1 opposite thereto so that the rotary cap 5 can be fitted into the outer cylinder 1 so as to be rotatable but immovable in the axial direction. 21, and an annular projection 22 is provided on the other side. These grooves 21 and protrusions 22
does not have to be circular.

In addition, the outer cylinder l has an axial passage 8 for knocking allowance.

A tip projection passage 9 communicates with the passage 8 and causes the tip of the refill 2 to protrude from the tip of the outer cylinder 1.

An axial passage 23 communicating with this passage 9 is provided, and an inner surface protrusion 24 is provided between this passage 23 and 9.

The rotating camp 5 is connected to the protrusion 3 of the slider 4.
is fitted into the circumferential slit 19, the protrusion 3 is inserted into the rear part of the outer cylinder 1 through the axial passage 23 of the outer cylinder 1, and when the protrusion 3 passes the inner protrusion 24,
The annular projection 22 and the annular groove 21 fit together, and the rotary cap 5 becomes rotatable with respect to the outer cylinder 1 but immovable in the axial direction.

Needless to say, the height of the annular protrusion 22 and the depth of the annular groove 21 are such that the rotary cap 5 can be detached from the outer cylinder 1 by pulling the head 5a backward. In this way, in the case of a ballpoint pen, when the ink runs out, the refill 2 can be replaced, and in the case of a mechanical pencil, the lead can be replenished.

Axial passage 8. Although the tip protrusion passage 9 and the axial passage 23 are slits in this embodiment, they may be grooves, and the tip protrusion slit 7 and the tip protrusion passage 9 in the illustrated example are Although the helical directions are opposite to each other, one of the slits 7, for example, for protruding the tip may be an axial slit.

It is preferable to have both spirals in opposite directions because a large amount of axial movement can be achieved even if their lengths are shortened.

In one embodiment of the first invention configured as described above, when the protrusion 3 of the slider 4 is located at the starting end of the tip protrusion slit 7 and the tip protrusion passage 9 as shown in FIG. 4(a), When the head 5a of the rotary cap 50 is rotated in the positive direction (clockwise direction indicated by the arrow) shown in FIG.
The projection 3 moves forward in the axial direction while moving circumferentially along these slits 7 and passages 9. This movement causes the slider 4 and the refill 2 to move forward until the step of the shaft body 16 constituting the refill 2 comes into contact with the inner step 15 of the outer cylinder 1 (see the imaginary line in FIG. 1). , the tip 2a of the refill 2 protrudes from the tip of the outer cylinder 1 (see FIG. 4, 18, (b)).

If the tip protruding slit 7 and the tip protruding passage 9 are spiral in opposite directions as shown in FIGS. 1 and 4, the refill 2 can be moved quickly even if their lengths are short. It is easy to understand what is happening.

At this time, the protrusion 3 of the slider 4 has a slit 7 for protruding the tip.
and the terminal end of the tip protruding passage 9, that is, the starting end position of the spiral slit 6 corresponding to the knocking allowance and the axial passage 8 corresponding to the knocking allowance. In the case of a ballpoint pen, writing can be performed using a ball held in the tip 2a of the protruding refill 2.

In the case of a mechanical pencil, when the head 5a of the rotary cap 5 is further rotated in the positive direction (clockwise direction shown by the arrow) as shown in FIG. Since the projections 3 of the slider 4 are in contact with each other, the projections 3 of the slider 4 move in the circumferential direction along the spiral slit 6 corresponding to the knocking distance, and are guided by the axial passage 8 corresponding to the knocking distance, and move the refill 2 forward. The rotating cap 5 moves against the spring 10 constituting the rotating cap 5, and by releasing the rotational force on the head 5a of the rotary cap 5, the rotating cap 5 moves rearward due to the spring force of the spring 10. By repeating this operation, the chuck 11 constituting the refill 2 is opened and closed, and by opening and closing the chuck 11, the core 12 can be sent out by a predetermined length from the tip 2a of the refill 2. The protruding lead 12 allows writing.

When the protrusion 3 of the slider 4 is located at the starting end of the helical slit 6 corresponding to the knocking allowance and the axial direction passage 8 corresponding to the knocking allowance, that is, at the end point of the tip protruding slit 7 and the tip protruding passage 9, When rotated in the direction (counterclockwise), the protrusion 3 of the slider 4 moves backward in the axial direction while moving in the circumferential direction along the slit 7 and the passage 9. This movement causes the tip 2a of the refill 2 to be retracted from the tip of the outer cylinder 1.

At this time, the protrusion 3 of the slider 4 is at the starting point position of the tip protrusion slit 7 and the tip protrusion passage 9.

As described above, according to the first embodiment, with the same configuration, it can be used as a rotary ballpoint pen or a rotary mechanical pencil by simply changing the feel for a ballpoint pen and the feel for a mechanical pencil. A certain writing instrument can be provided.

FIG. 5 is a longitudinal sectional view showing an embodiment of the second writing instrument of the present invention.

In this embodiment, in FIG. 1, either a portion slightly rearward of the circumferential slit 19 of the rotary cap 5 or an inner surface portion of the outer cylinder 1 facing thereto, 2, for example, an annular shape provided on the inner surface of the outer cylinder 1. The groove 21 is made wider in the rear direction in the axial direction by the knocking distance.

In an embodiment of the second invention configured as described above, in the case of a ballpoint pen, the tip part 2 of the refill 2 (similarly, the tip part 2 of the refill 2
a can be protruded from the tip of the outer cylinder 1, and can also be retracted (see Fig. 4(a), mountain).

In the case of a mechanical pencil, with the tip 2a of the refill 2 protruding from the tip of the outer cylinder 1 as shown in FIG.
When the slider 4 rotates, the protrusion 3 of the slider 4 comes into contact with the starting end of the axial passage 8 corresponding to the knocking allowance, so the protrusion 3 of the slider 4 moves in the circumferential direction along the spiral slit 6 corresponding to the knocking allowance. The rotary cap 5 is moved rearward by the amount of the knocking amount. That is, the annular protrusion 22 widens the inside of the annular groove 21 by the amount of the knocking distance, thereby moving the rotary cap 5 rearward by the amount of the knocking amount (see FIG. 6).

If you knock on rotating camp 5 in this state, slider 4
The protrusion 3 of the rotary cap 5 moves forward in the axial passage 8 corresponding to the knock allowance. Lead tank 13 that constitutes the slider 4 and refill 2. The chuck 11 is opened and closed by moving the chuck 11 forward against the spring 10 by the knocking distance and backward by the spring force of the spring 10, and by opening and closing the chuck 11, the core 12 is sent out by a predetermined length. be able to. In order to retract the tip 2a of the refill 2, the head 5a of the rotary cap 50 can be rotated in the opposite direction.

As described above, according to an embodiment of the second invention, even if the same configuration is used as a rotary ballpoint pen by rotating operation, a gap for the knocking amount is formed between the rear end of the outer cylinder and the camping head by rotating operation. It is possible to provide a compatible writing instrument that can also be used as a mechanical pencil with a D-type mechanical pencil.

In any embodiment of the present invention, the outer diameter of the outer cylinder 1 and the outer diameter of the head 5a of the rotary cap 5 are made the same, and the outer cylinder 1
When the rear end of the rotary cap 5 and the head 5a of the rotary cap 5 are set in opposition to each other, a writing instrument with a smart external design can be provided.

Further, in the present invention, it goes without saying that a clip may be provided on the outer cylinder 1 or the rotary cap 5.

Furthermore, at the end point of the spiral slit 6 of the rotating camp 5, there is a depression 2 into which the protrusion 3 fits, as shown in FIG. 3(b).
5 and an inner surface protrusion 26 may be provided immediately before it.

〔Effect of the invention〕

That is, according to the first writing instrument of the present invention, the writing instrument has the same configuration and is interchangeable so that it can be used as a rotary ballpoint pen or a rotary mechanical pencil by simply changing the feel for a ballpoint pen and the feel for a mechanical pencil. A certain writing instrument can be provided.

Further, according to the second writing instrument of the present invention, even if the same configuration is used as a rotary ballpoint pen by rotating operation, a gap for a knocking amount is formed between the rear end of the outer cylinder and the cap head by rotating operation, It is possible to provide a compatible writing instrument that can also be used as a rotary knock-type mechanical pencil.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a longitudinal cross-sectional view showing an embodiment of the first writing instrument of the present invention, and Figs. 2 (a) and (b) are external views showing an example of the slider used in the present invention, respectively. Figure and its longitudinal sectional view, No. 3
Figures (al and b) are external views showing two examples of the rotary cap used in the present invention, Figures 4 (a) to (C) are front views for explaining the operation in the first invention, and Figure 5 is the present invention. Fig. 6 is a longitudinal sectional view showing an embodiment of the second writing instrument, and Fig. 6 is a front view for explaining the operation in the second invention. 1...Outer cylinder, 2...Refill, 2a
...Tip, 3...Protrusion, 4...
...Slider, 5...Rotary cap, 5a...
...Head, 6...Spiral slit, 7...
... Slit for tip protrusion, 8... Axial passage, 9... Passage for tip protrusion, 10...
Spring, 11... Chuck, 12... Core, 13... Core tank, 14... Chuck ring, 15... Inner stage part , 16...
Shaft body, 21... annular groove, 22... annular projection. note 1 sticky note 2

Claims (4)

[Claims] (1) A refill 2 is housed in an outer cylinder 1, a slider 4 having a protrusion 3 on the outer surface is fitted to the rear end of the refill 2, and the slider 4 is fitted into the slider 4 and the rear end of the outer cylinder 1 is fitted. The rotary cap 5, which is rotatably but not axially movable, is fitted with a helical slit 6 for a knocking allowance, and a tip that communicates with the helical slit 6 and causes the tip of the refill 2 to protrude from the tip of the outer cylinder 1. A protruding slit 7 is provided in the outer cylinder 1, an axial passage 8 for a knocking allowance, and a tip protruding passage 9 that communicates with the axial passage 8 and causes the tip of the refill 2 to protrude from the tip of the outer cylinder 1. At least one of the tip protruding slit 7 and the tip protruding passage 9 is spirally shaped, and the protrusion 3 of the slider 4 is provided with a spiral shape.
is slidably fitted into the spiral slit 6 and the axial passage 8 or the tip protrusion slit 7 and the tip protrusion passage 9. (2) A refill 2 is housed in the outer cylinder 1, a slider 4 having a protrusion 3 on the outer surface is fitted to the rear end of the refill 2, and the slider 4 is fitted into the slider 4 and the rear end of the outer cylinder 1 is fitted. The rotary cap 5 is fitted into the rotary cap 5 so as to be freely rotatable and movable in the axial direction by the knocking distance, and the rotary cap 5 has a spiral slit 6 corresponding to the knocking distance. A tip protrusion slit 7 is provided to protrude from the tip, and the outer cylinder 1 has an axial passage 8 for knocking allowance, and a tip that communicates with the axial passage 8 and allows the tip of the refill 2 to protrude from the tip of the outer cylinder 1. At least one of the tip protruding slit 7 and the tip protruding passage 9 is spirally shaped, and the protrusion 3 of the slider 4 is connected to the spiral slit 6 and the axial passage 8. Or a writing instrument which is slidably fitted into the slit 7 for protruding the tip and the passage 9 for protruding the tip. (3) The writing instrument according to any one of claims 1 and 2, wherein the tip protrusion slit 7 and the tip protrusion passage 9 are spiral in directions opposite to each other. (4) The writing instrument according to any one of claims 1 and 2, wherein the rear end of the outer cylinder 1 and the head 5a of the rotary cap 5 are set in opposition to each other.