KR920002312Y1 - Sharp pencil - Google Patents

Abstract

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Description

Compound writing instrument

1 is a partially exploded perspective view showing a first embodiment of the composite writing device of the present invention.

Figure 2 is a longitudinal cross-sectional view of the present invention composite writing mechanism.

3 is a cross-sectional view of the cap according to the present invention.

Figure 4 is a side view showing an embodiment of a support according to the present invention.

5 (a) and 5 (b) are a front view and a Vb-Vb cross-sectional view, respectively, as viewed in the direction of the Va-Va arrow in FIG.

6 is an operation explanatory diagram of a writing shaft according to the present invention.

7 is a side view showing another embodiment of the support according to the present invention.

(A) and (b) are the front view and the sectional view of VIIb-VIIb seen from the arrow direction of VIIa-VIIa of FIG. 7, respectively.

* Explanation of symbols for main parts of the drawings

1: support 2a, 2b: through hole

3a, 3b: guide grooves 4a, 4c: bilge shaft for the bone pen

4b: writing shaft for pencil pencil 4a ₁ , 4b ₁ : tip

4a ₂ , 4b ₂ : Support shaft 6a, 6b: Stopper

7a, 7b: slider 8a, 8b: spring

9: outer cylinder 9a: tip entrance

10 cap 10 slope

12: engaging portion 13: inclined surface

14 cam 15 rotation stop

16: projection 17: projection

20: slit 21: hook part

22: latching part 23: eraser rubber mounting

The present invention relates to a composite writing instrument that allows the tip of a writing shaft body of different writing colors, different types, or the same color and the same type to be protruded from the front entrance of the outer cylinder by rotating the cap.

Such a conventional composite writing instrument has a structure in which, for example, the cap is rotated clockwise or counterclockwise so that the two writing shafts can be alternated from the outer end of the outer cylinder. Since the number of parts was limited to two, not only was it impossible to apply more handwriting shafts, but also had a drawback in that a stopper was formed at the rear of each handwriting shaft separately so as not to deviate.

The present invention has been devised to solve the above-described drawbacks. When the cap 10 shown in FIG. 1 and 2 is rotated, the tip portions 4a ₁ , 4b _{1... Of} the writing shafts 4a, 4b _. the spring according to a composite writing tool (8a, 8b _...) of the to-disappearance from the front end exit (9a) of one by one outer tube (9) by the counter to spring force, or resilient force, the cap in the center of the back of the support (1) (10 Eraser rubber mounting base (23) installed in the) is configured to fit.

The present invention configured as described above, it is possible to install three or more writing shafts (4a, 4b _... ), as well as the eraser rubber mounting base 23 installed in the cap 10 in the rear central portion of the support (1), By eliminating the need for a separate stopper to prevent the writing shaft from falling behind each of the writing shafts 4a, 4b _... , The configuration can be simplified and manufacturing costs can be reduced.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a partially exploded perspective view showing the configuration of an embodiment of the composite pick mechanism of the present invention, Figure 2 is a longitudinal cross-sectional view of the composite writing mechanism, Figure 3 is a cross-sectional view of the cap in the present invention, Figure 4 is a A side view showing one embodiment, 5a, b is a front cross-sectional view Vb-Vb cross-sectional view as seen from the Va-Va line direction of Figure 4, respectively, the following describes the configuration of the present invention with reference to these figures.

Reference numeral 1 in FIGS. 1 to 3 denotes a support, which communicates with a plurality of, for example, three through holes 2a, 2b, 2c and these through holes 2a, 2b, 2c. Guide grooves 3a, 3b and 3c are formed (see also 5a and b), and each of the through holes 2a, 2b and 2c and each of the guide grooves 3a, 3b and 3c communicating therewith, respectively. The back portion of the plurality of writing shafts (in this embodiment, two writing shafts of blue and red ball pen writing bodies 4a and 4c having different colors and three writing shaft bodies in combination with the pencil pencil writing body 4b) are fitted. It is.

Here, the pencil axle 4b for the mechanical pencil is inserted into the support shaft 4b ₂ , and the pen shafts 4a and 4c are similarly fitted to the support shafts 4a ₂ and 4c ₂ , respectively. It is.

On the back side of each of the writing shafts 4a, 4b, and 4c, against the resilience of the springs 8a, 8b, and 8c in each guide groove 3a, 3b, and 3c, or the shot of the springs 8a, 8b, and 8c, Sliders 7a, 7b and 7c, which are moved by force, are provided. Between these sliders 7a, 7b and 7c and the front stoppers 6a, 6b and 6c of the guide grooves 3a, 3b and 3c. The springs 8a, 8b, and 8c are fitted in the outer casing, and the outer cylinder 9 is screwed onto the support 1 so as to surround the front portion of each of the writing shafts 4a, 4b and 4c, while the support 1 is supported. The rear outer periphery of the cap 10 is fitted to be able to rotate in one direction or in the opposite direction until it is caught by the rotation support (15).

In addition, in the present embodiment, the rotation stopping portion 15 is formed in one of the partition members of the guide grooves 3a, 3b, and 3c of the support 1, and the inner surface of the cap 10 is shown in FIG. As described above, the protrusion 16 is formed so that the cap 10 rotates in one direction or the opposite direction until the protrusion 16 of the cap 10 contacts the rotation stop 15 of the support 1. It is intended to be fitted.

On the other hand, on the inner surface of the cap 10, the respective sliders 7a, 7b, and 7c are sequentially opposed to the single force of the springs 8a, 8b, and 8c or reciprocated by the repulsive force to provide the respective writing shafts ( Inclined surfaces 11 and 13 which project the tip portions 4a ₁ , 4b ₁ , 4c ₁ of 4a, 4b, 4c from the tip entrance 9a of the outer cylinder 9, and these writing shafts 4a, 4b, 4c. Is provided with a conical cam (14) having a locking portion (12) for maintaining the tip portion (4a ₁ , 4b ₁ , 4c ₁ ) of the) protruding from the tip entrance (9a) of the outer cylinder (9). have.

In addition, the back side of the support 1 is provided with a hook portion 21 with a slit 20 formed therein, while an inner surface of the cap 10 has a hook portion 22 to which the hook portion 21 is caught. In the present embodiment, the eraser rubber mounting table 23 having the protrusion 17 integrally fitted to the hook portion 21 center portion inside the rear side of the cap 10 shown in FIG. A jig hole 24 is formed on the side of the bottom of the eraser rubber mount 23 to be used to release the locking state of the hook portion 21 and the locking portion 22. Here, the eraser rubber mounting table 23 may be screwed to the cap 10.

Reference numeral 25 is a clip to the base end is inserted into the insertion hole 28 formed on the back of the cap 10, 26 is an eraser rubber to be fitted to the eraser rubber mounting 23, 27 is an eraser rubber mounting ( 23) It is an eraser rubber cover that covers.

Next will be described the operation of the present invention configured as described above.

6 is an operation explanatory diagram of the writing shaft (4a, 4b, 4c) in the present invention, when the projection 16 of the cap 10 is not in contact with the rotation stopping portion 15 of the support (1) When the tip portions 4a ₁ , 4b ₁ , 4c _{1 of the} writing shafts 4a, 4b, 4c are all in the outer cylinder 9, the cap 10 is oriented in one direction with respect to the outer cylinder 9. In the case of the example, since the rotation operation of the cap 10 is not disturbed even if it is rotated in the clockwise direction, the writing shaft body for the blue ball pen by the inclined surface 11 of the conical cam 14 formed on the inner surface of the cap 10. 4a and the slider 7a of the writing shaft 4a are moved forward along the through-hole 2a and the guide groove 3a while counteracting the spring force of the spring 8a, and then the slider 7a. The front end 4a ₁ of the writing shaft body 4a protrudes from the front end opening 9a of the outer cylinder 9 in the state where it is caught by the locking part 12 of the cam 14 (FIGS. Handwriting in blue) You can do it. In this case, the tip portion 4c ₁ and the slider 7c of the writing implement body 4c move backward along the inclined surface 13 by the elastic force of the spring 8c.

Subsequently, when the cap 10 is rotated clockwise again, the slider 7a is separated from the locking portion 12 of the cam 14 so that the writing shaft 4a and the slider 7a are applied to the spring force of the spring 8a. As a result, the front end portion 4a ₁ of the writing shaft 4a is drawn from the tip entrance 9a of the outer cylinder 9 by moving backward along the inclined surface 13 of the cam 14.

When the cap 10 is rotated clockwise again, the inclined surface 11 of the cam 14 provided on the inner surface of the cap 10 next moves the writing shaft 4b for the mechanical pencil and the slider 7b to the spring ( The counter shaft 8b moves forward along the through hole 2b and the guide groove 3b while counteracting the resilience force of 8b, and the writing shaft body (7) is caught by the locking portion 12 of the cap 14. The tip portion 4b ₁ of 4b is protruded from the tip entrance 9a of the outer cylinder 9, and when the cap 10 is knocked in this state, the pen core is discharged by a predetermined amount as in the prior art. It will be able to take notes.

At this time, the projection 16 of the cap 10 is in contact with the rotation stop 15 of the support 1 will not be able to rotate further clockwise.

In this case, it is not necessary to draw the lead, but if you want to attract the lead, you can press the front end of the lead in the knock state.

On the other hand, when the tip portion 4b ₁ of the writing shaft body 4b for a pencil pencil is protruded from the tip entrance opening 9a of the outer cylinder 9 as described above, the cap 10 is rotated counterclockwise. The 7b moves away from the locking portion 12 of the cam 14 so that the writing shaft 4b and the slider 7b are along the inclined surface 11 of the cam 14 by the spring force of the spring 7b. It is moved back so that the tip portion 4b ₁ of the writing shaft 4b is drawn from the tip entrance 9a of the outer cylinder 9 along the inclined surface 11 by the spring 9b.

Then, the cap 10 is rotated counterclockwise again so that the writing shaft 4a and its slider 7a are opposed to the spring force of the spring 8a by the inclined surface 13 of the cam 14. 2a) and when the slider 7a is engaged with the engaging portion 12 of the cam 14 by moving forward along the guide groove 3a, the tip portion 4a ₁ of the writing shaft 4a is moved to the outer cylinder ( It becomes the state which protruded to the front-end entrance 9a of 9), and it becomes possible to write in blue.

When the cap 10 is further rotated counterclockwise, the slider 7a is detached from the locking portion 12 of the cam 14 so that the writing shaft 4a and the slider 7a have a spring force of the spring 8a. By moving backward along the inclined surface 11 of the cam 14, the front end portion 4a ₁ of the writing shaft 4a is drawn from the front end opening 9a of the outer cylinder 9.

Subsequently, when the cap 10 is further rotated counterclockwise, the inclined surface 13 of the cap 14 causes the writing shaft 4c and its slider 7c to counteract the spring force of the spring 8c, while the through hole ( 2c) and moving forward along the guide groove 3c, the slider 7c is caught by the locking part 12 of the cam 14, and the front end part 4c ₁ of the writing shaft 4c is made into the outer cylinder ( It becomes the state which protruded from the front-end entrance 9a of 9), and it becomes possible to write in red. At this time, the projection 16 of the cap 10 is in contact with the rotation stopping portion 15 of the support 1 is no longer able to rotate in the counterclockwise direction.

Thus, the tip portions 4a ₁ , 4b ₁ , 4c _{1 of the} three writing shafts 4a, 4b, 4c rotate the cap 10 clockwise or until the protrusions 16 touch the rotary stop 15. By rotating counterclockwise, the engaging portion, which is the tip of the conical cam 14, is sequentially deviated from the front end entrance 9a of the outer cylinder 9 by the inclined surface 11 or 13 of the conical cam 14. The projection state is maintained at 12, so that writing can be performed with each of the writing shafts 4a, 4b, and 4c. Then, when the next cap rotation occurs, the tip portions 4a, 4b, 4c of these writing shafts 4a, 4b, 4c are driven into the inclined surfaces 11 or 13 by the spring force of the springs 8a, 8b, 8c. Will enter.

On the other hand, when the pen tip of the mechanical pencil or the pen of the ball pen is used up to refill the pen core or replace the ball-point pen writing shaft 4a or 4c with a new one, the cap 10 is strongly applied to the outer cylinder 9. Rotate in a counterclockwise direction so that the cap 10 and the supporter 1 are integrated, so that the screw is loosened and can be separated. Thus, the outer cylinder 9 is separated. Then, the writing shaft body for the pencil and the ballpoint pen The holding shafts 4a ₁ , 4b ₂ , 4c ₂ are pulled out from the holding shafts 4a, 4b, and 4c as in the prior art, and the support shaft 4b ₂ is refilled to fill the core, and the writing shaft 4b is supported by the supporting shafts 4b _2. ), The ink-filled ball-point pens 4a, 4c filled with ink are replaced with the holding shafts 4a ₁ , 4c ₂ instead of the ball-point pens 4a or 4c with ink. In addition, the writing shaft bodies 4a and 4c for ballpoint pens are replaced.

In addition, when there is a problem that the slider 7a, 7b, 7c does not work due to a manufacturing mistake on the manufacturer's side, and the cap 10 needs to be removed, the eraser rubber cover 27 is removed. Pull out the mounting table 23, and then press the body of the jig to the jig mouth 24 to press the hook-shaped portion 21 inwardly using the slit 20 to retract. The problem can be easily solved by removing the cap 10 so that the side portions of the sliders 7a, 7b, and 7c are exposed by being able to release the engagement of the.

7 is a side view of another embodiment of the support in the present invention, 8a, b is a front view and a Ⅷb- 선 b cross-sectional view in the direction of the VIIa-VIIa arrow of Fig. 7, respectively, this embodiment has three handwriting Guide grooves 3a, 3b, 3c formed in communication with the through-holes 2a, 2b, 2c into which the shafts 4a, 4b, 4c are fitted are arranged in a two-sided triangular shape on the support 1 to form one writing shaft. When the tip of the protruding portion protrudes from the front end opening 9a of the outer cylinder 9, the front ends of the other two writing shafts are to be aligned later than the conventional positions in the front ends of the outer cylinder 9. The tip portions 4a ₁ , 4b ₁ , 4c _{1 of} (4a, 4b, 4c) are positioned relatively forward in the tip portion of the outer cylinder 9, thereby preventing mutual interference, thereby preventing the external earth 9 I can make the tip of the) thinner than the conventional one, and it is easy to see the tip of the lead and the tip of the ball-point pen It is easy to take notes.

According to the present invention described above, _one of the tip portions 4a ₁ , 4b _1... Of the plurality of writing shafts 4a, 4b _... , By rotating the cap 10 is opposed to the spring force of the springs 8a, 8b _. In the composite writing instrument which is projected from the tip entrance 9a of the outer cylinder 9 by the repulsive force, a part of the eraser rubber mounting base 23 installed on the cap 10 is fitted in the rear center of the support 1. As a result, a separate stopper is not required to pull out the writing shafts 4a, 4b, _... , thereby simplifying the configuration and reducing the manufacturing cost.

Claims (1)

A plurality of writing shafts 4a and 4b are fitted into the plurality of through holes 2a, 2b _... formed in the support 1 and the guide grooves 3a, 3b formed so as to communicate with these through holes 2a, 2b _... , respectively. In the writing shafts 4a and 4b, the sliders 7a, which are reciprocated in the guide grooves 3a, 3b _... against the repulsion force of the springs 8a, 8b _... or are slid reciprocated by the repulsion force, 7b) are are installed, wherein each writing shaft (4a, 4b _...) for surrounding the outer cylinder (9) is the support 1 to be on the other hand, each of the sliders (7a, the interior of the cap (10) 7b connected to _...) The cam 14 is provided so that the writing shaft body 4a, 4b _... may be projected from the front-end entrance 9a of the outer cylinder 9 by the spring 8a, 8b _... , or with the resilience force, and the said support body ( The hook portion 21 is installed at the rear end of 1), and the catching portion 22 on which the hook portion 21 is caught is formed on the inner surface of the cap 10, so that the cap 10 is closed with respect to the outer cylinder 9. Clockwise again Rotates in a counterclockwise direction to in the plurality of writing shafts (4a, 4b _...) the front end (4a _1, 4b _{1 ...)} are combined pilgu known so that by retracting from the front end exit (9a) of the outer cylinder 9 in this order of While the eraser rubber support 23 is installed on the back of the cap 14 inside the cap 10 to hold the eraser rubber 26, the eraser rubber support 23 is integrally formed on the bottom surface thereof. A composite writing instrument characterized in that it is fitted to fit in.