KR930003581Y1 - Writing instrument of rounding type - Google Patents

Abstract

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Description

Rotary writing instruments

1 is a cross-sectional view showing the configuration of an embodiment of the present invention rotary writing instrument.

2 is a development view showing the relationship between the slider cylinder and the operation cam in the present invention.

* Explanation of symbols for main parts of the drawings

1: outer cylinder 2: tip cap

3: writing member 4: cap

5: the core 6: hook

7A: small diameter part 7B: large diameter part

7: slider cylinder 8: V-shaped inclined cam surface

8A: One slope cam face 8B: The other slope cam face

9: spring 10: inner stair part

11: operation cam cylinder 11A: operation cam

12: key 13: keyway

14: key 15: keyway

18: Gurley part d: gap

The present invention relates to a rotary writing instrument configured to insert a writing member into an outer cylinder, and then insert a tip cap to rotate a cap to draw a pen core or to penetrate a pen tip.

In the conventional rotary bowl pen, for example, a bowl pen writing member is inserted into the front cylinder, and a spring is installed between the spring support of the writing member and the spring support in the tip cap, and the rear portion of the inner cylinder is used for rotation of the rotating cylinder. Accordingly, the movable body for moving the predetermined range forward and rearward is installed, and the inner cylinder has a structure in which the rear cylinder for rotating the rotary cylinder is fitted to be easily detachable.

However, in the conventional bowl pen as described above, in order to protrude the pen tip of the writing member from the front end of the front cylinder, the writing member is moved by moving the rear outer cylinder to rotate the rotating cylinder so that the moving body moves forward. The pen tip is protruded from the front end of the front cylinder to take notes, and the pen is protruded from the front end against the resilience force, and if the rear cylinder is rotated in the opposite direction, the rotating cylinder is rotated in the opposite direction, and the moving body is moved backward. By moving, the writing member is moved backwards by the spring force, so that the pen tip can be drawn from the front end of the front cylinder.

In addition, the conventional rotary mechanical pencil is supported so that the inner cylinder can rotate freely in the outer cylinder, for example, the writing member for the sharp pencil is inserted in the inner cylinder, and the writing member is formed with a slit to form a spiral on the inner cylinder through the slit. While the slider having a protrusion fitted into the groove was fitted into the writing member, the slider was attached to the slider and the cap was detachably attached to the inner cylinder.

In the conventional rotary mechanical pencil configured as described above, in order to project the pen core from the front end of the outer cylinder, the cap is rotated to rotate the inner cylinder, and the slider into which the protrusion is inserted into the spiral groove moves forward along the slit to the front end of the outer cylinder. Since the lead is protruding, you can write.

Rotating the cap in the opposite direction moves the slider backwards, allowing the core to be drawn from the front end of the barrel. And when all the lead is used, the lead is inserted into the slider.

However, the rotary bowl pen and the rotary mechanical pencil are not compatible because they have a completely different structure as described above, and if they run out of lead, they must not only put the lead on the slider, but also cannot draw the lead. There was this.

The present invention rotatable writing instrument is devised to solve the above-mentioned drawbacks, and as shown in the first dong, the writing member 3 is inserted into the outer cylinder 1 and the tip cap 2 is attached to the outer cylinder. In the rotary writing instrument (1) rotates the cap (4) installed on the rear side, the pen tip (5) is dispensed from the front end of the front end cap (2) or the pen tip is projected, so as to touch the writing member (3). A slider cylinder (7) consisting of a small diameter portion (7A) having a locking portion (6) and a large diameter portion (7B) having an inclined cam surface (8) inclined in a V shape is mounted to the writing member (3). The outer cylinder 1 is fitted with a large diameter portion 7B freely movable in the axial direction but unable to rotate, and a spring 9 for pushing the slide cylinder 7 backward is installed. , The operation cam 11 is in contact with the V-shaped inclined cam surface (8) to the inside of the outer cylinder (1) With the operating cam cylinder 11 hooked to the end 10 installed, the cap 4 connected to allow the operating cam cylinder 11 to rotate can also be rotated and detached from the outer cylinder 1. The structure is fitted so that.

The rotary pen according to the present invention configured as described above has a large diameter portion 7B as the operating cam cylinder 11 rotates when the cap 4 is rotated to rotate the operating cam 11A of the operating cam cylinder 11. The slider cylinder 7, which is in contact with one of the inclined cam surfaces 8A of the V-shaped inclined cam surface 8, moves forward against the spring force of the spring 9, and the small diameter constituting the slider cylinder 7 The writing member 3 also moves forward by the locking portion 6 of the portion 7A.

Then, when the rotation operation of the cap 4 is stopped, the slider cylinder 7 moves backwards and returns to its original position due to the spring force of the spring 9, which is repeated, that is, the cap 4 is reciprocated. When the rotary operation is performed, the slider cylinder 7 moves back and forth, and the writing member 3 repeats the movement in the front and rear directions so that the pen core 5 is adjusted from the front end of the tip cap 2, and V When the other inclined cam surface 8B of the inclined cam surface 8 is used, the pen tip is raised.

In order to keep the tip of the pen in a protruding state, a locking portion 18 is formed on the other cam surface 8B of the V-shaped inclined cam surface 8 so that the operating cam 11A is engaged with the locking portion 18. When the pen tip is to keep the state protruding from the front end of the tip cap (2) it is possible to write.

In order to draw the lead 5 from the front end of the tip cap 2, the writing member 3 is moved forward and the chuck is opened so that the end of the lead is pulled from the front end of the tip cap 2. In order to pull the pen tip from the front end of the tip cap 2 and to disengage the actuating cam 11A with the engaging portion 18 formed on the other inclined cam surface 8B, the pen tip moves to the front end of the tip cap 2. Will be drawn from.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a cross-sectional view of a configuration of an embodiment of a rotary writing instrument of the present invention, showing a case of a rotary mechanical pencil, and FIG. 2 shows a relationship between the slider cylinder and the operating cam of the present invention. In FIG. 1, reference numeral 1 denotes an outer cylinder, and 3 denotes a writing member in which the tip cap 2 is coupled, and after the writing member 3 is inserted into the outer cylinder 1, the tip cap 2 is screwed or fitted. It is to be attached.

And the slide cylinder (7) is a large diameter portion (7B) having a small diameter portion (7A) having a locking portion (6) to reach the rear end of the writing member 3 and a V-shaped inclined cam surface (8) on the back This slide cylinder 7 is mounted on the writing member 3, so that the large diameter portion 7B can move freely in the axial direction to the outer cylinder 1 but cannot rotate, for example, the outer cylinder 1 The large diameter portion 7B is fitted to the inner surface of the c) so as to move freely in the axial direction by the key 12 and the key groove 13, but not to rotate. In this embodiment, the key groove 13 is formed in the inner surface of the outer cylinder 1, and the key 12 is formed in the outer surface of the large diameter part 7B. A spring 9 is provided between the slide cylinder 7 and the tip cap 2 to push the slide cylinder 7 backward.

When the actuating cam 11A is reciprocated along one of the inclined cam surfaces 8A of the V-shaped inclined cam surface 8 of the slider cylinder 7, the feeding of the core 5 is made, and the other inclined cam surface is formed. A locking portion 18 into which the movable cam 11A is engaged is formed in 8B (see Fig. 2). In this case, the engaging portion 18 is configured such that the working cam 11A is engaged with the mechanical pencil to maintain the protruding state of the writing member 3, and in the case of the bowl pen, the working cam 11A is fitted here. ) To keep the pen tip protruding so that you can write.

In addition, the outer side of the slide cylinder (7) is in contact with the working cam (11A) to the V-shaped inclined cam surface (8) of the slide cylinder (7) and the outer surface to be caught on the inner staircase 10 of the outer cylinder (1) The actuating cam cylinder 11 is installed, and the outer cylinder 1 is rotated by the cap 4 by interference fitting or screwing (in this embodiment, by the concave portion 19 and the convex portion 20). It is fitted so that it cannot be removed. Here, the outer surface of the actuating cam 11A is connected to the inner surface of the cap 4 by the key 14 and the key groove 15 so as to rotate together.

In addition, a small gap d is provided between the rear surface of the writing member 3 and the inner surface of the locking portion 6, and the gap d prevents the writing member 3 from always being pushed forward. It is possible to avoid a phenomenon in which the penis slips and the writing becomes impossible.

Then, the back of the locking portion 6 of the small diameter portion 7A, which is in contact with the rear end of the writing member 3, becomes the tapered surface 16, so that the core 5 can be easily spread, and the operation cam cylinder 11 The eraser rubber holder (17) enclosed in the eraser rubber (17A) is attached to the rear part of the bar so that the eraser rubber holder (17) can be detached from the writing member (3). It also serves to prevent it from going backwards, but instead, it can be fitted with a stopper or a stopper to prevent the lead from slipping out.

Meanwhile, in the present embodiment, the slider is installed in the front end portion of the front end cap 2 of the writing member 3 while the lead guide pipe 21 at the front end thereof moves forward when the writing member 3 is moved forward. ) It protrudes from the front end and pushes the end of the core (5) to be pulled together, but it is not necessary to install this slider.

In the rotary mechanical pencil configured as described above, when the cap 4 is rotated, the actuating cam cylinder 11 connected to the cap 4 to be rotated together by the key 14 and the key groove 15 is rotated. The slider cylinder 7 which abuts against one inclined cam surface 8A of the V-shaped inclined cam surface 8 of the large diameter portion 7B according to the rotation of the operating cam 11A of the operating cam cylinder 11 is Since the large diameter portion 7B of the outer cylinder 1 is freely moved in the axial direction by the key 12 and the key groove 13 but cannot be rotated, the spring 9 is moved forward against the spring force of the spring 9. The writing member 3 is moved forward by being pushed by the locking portion 6 of the small diameter portion 7A constituting the slider cylinder 7. At this time, the front end pipe 21 of the slider is also pushed out to protrude from the front end of the tip cap 2.

Then, when the rotation operation of the cap 4 is stopped, the slider cylinder 7 is moved backward and returned to its original position by the spring force of the spring 9, and when this operation is repeated, that is, the cap 4 When the reciprocating rotation operation is repeated, the slide cylinder 7 moves back and forth, and the forward and backward movement of the writing member 3 is repeated so that the slide cylinder 7 is fed out from the front end pipe 21 of the tip cap 2 of the pen core 5 to be written. Will be able to.

On the other hand, in order to draw the lead core 5 and the front end pipe 21 from the front end of the front end cap 2, once the cap 4 is rotated, the writing member 3 is moved forward and assembled in the front end cap 2. Pressing the end of the lead in the state that the chuck is open, the lead 5 and the front pipe 21 can be drawn from the front end of the tip cap (2).

If it is necessary to fully fasten the writing member 3, such as when carrying such a rotary mechanical pencil, the other side is inclined from the neutral position of the V-shaped inclined cam surface 8 as shown in FIG. The cap 4 is rotated so as to contact the cam surface 8B so that the actuating cam 11A is engaged with the engaging portion 18 of the other inclined cam surface 8B so that the writing member 3 is completely engaged. You can do it.

Next, a description will be given of the present invention applied to the rotary ball pen.

It is configured similarly to the case of the mechanical pencil except that a spring is installed between the spring bearing of the leading cap 2 and the spring bearing of the writing member 3 instead of the writing member for the sharp pencil in the tip cap 2. However, in the case of using the eraser rubber holder 17 or the correction rod holder, air flow holes are provided between them and the operation cam 11, of course.

In the rotary bowl pen configured as described above, when the cam 4 is rotated, the actuating cam cylinder 11 connected to be rotated by the key and the key groove 15 is rotated, and the actuating cam cylinder is rotated. With the rotation of (11), the slider cylinder 7 which has been in contact with the other inclined fag surface 8B of the V-shaped inclined cam surface 8 of the large diameter portion 7B of the working cam 11A is attached to the outer cylinder 1. Since the large diameter portion 7B is fitted so as to move freely in the axial direction by the key 12 and the key groove 13 but not to rotate, it moves forward against the spring force of the spring 9, The writing member 3 is pushed by the locking portion of the small diameter portion 7A constituting the slide cylinder 7 to move forward.

As the writing member 3 is moved forward, the actuating cam 11A of the actuating cam cylinder 11 is formed on the other inclined cam surface 8B of the V-shaped inclined surface 8 of the slider cylinder 7. Engaged in the portion 18, the pen tip (ball) of the writing member 3 is kept protruding from the front end of the tip cap 2, so that writing can be performed.

In order to pull the pen tip from the front end of the tip cap 2, if the operating cam 11A is released from the locking portion 18 formed on the other inclined cam surface 8B by rotating the cap 4 in the opposite direction, The pen tip is drawn from the front end of the tip cap 2 by being returned to its original state by the spring force and the rotational operation of the spring 9.

As described above, according to the present invention, since the configurations of the rotary mechanical pencil and the rotary bowl pen are almost the same, they are not only compatible but also the pens accommodated in the writing member 3 are automatically dispensed in sequence even if the cores are used up. It is possible to continue writing.

Claims (4)

The writing member 3 is inserted in the outer cylinder 1 so that the front side is supported by the tip cap 2, and the front and rear parts are moved forward and backward by the rotating cam mechanism by rotating the cap 4 installed at the rear portion of the outer cylinder 1, When the writing member 3 is for a pencil, the pen tip is dispensed, while in the case of a bowl pen, the rotary writing instrument has a pen tip. The large diameter that the cross section between the small diameter portion 7A and the small diameter portion 7A having the engaging portion 6 which the back end of the writing member 3 touches when the part is inserted forms the V-shaped inclined cam surface 8. A slide cylinder 7 composed of a portion 7B and an actuating cam 11 formed at the front end of the slide cylinder 7 are formed so as to be in mutual contact with each other on the outer circumference of the small diameter portion 7A. To contact the V-shaped inclined cam surface 8 formed on the step surface of the slide cylinder (7) The slide cylinder (7) is freely moved in the axial direction by the key (12) and the key groove (13) on the inner circumferential surface of the outer cylinder (1) at its large diameter portion (7B) while being made of an operating cam cylinder. It is fitted so that it cannot be pushed backward by the spring 9, while the actuating cam cylinder 11 has an outer circumferential surface thereof caught by the inward staircase 10 of the outer cylinder 1 and the cap 4 And is a rotary writing instrument, characterized in that made by being connected by the key (14) and the key groove (15). The rotary writing instrument according to claim 1, wherein an eraser rubber holder or a crystal rod holder is mounted on the working cam cylinder. 2. The rotary writing implement according to claim 1, wherein the writing member (3) is for a mechanical pencil, wherein a writing penetrating hole having a tapered surface (16) for guiding a pen core supplied to the engaging portion (6) is formed. . The rotary writing implement according to claim 1, wherein a gap (d) is provided between the rear end of the writing member (3) and the locking portion (6) when the writing member (3) is for a ball pen.