KR930001520Y1 - Sharp pencil - Google Patents

Abstract

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Description

Writing utensils

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

2 is a partially exploded side view of FIG.

* Explanation of symbols for main parts of the drawings

1: front outer cylinder 2: writing member

3: Tip cap 4: Cam body

5: cam surface 6: cam groove

7: rotating cam 8: protrusion

9: staircase 10: cambaa

11: spring 12: rear outer cylinder

13: slit 14: fantasy concave

16: shaft member 17: cutout

18: slice 19: protrusion

20: engaging portion 23: ring

24: hanging groove

The present invention relates to a writing instrument having a rotating cam mechanism.

Referring to FIG. 1, a conventional writing instrument of this type is described, wherein the cam body 4 is integrally formed on the inner surface of the outer cylinder while the writing member 2 is fitted in the outer cylinder, and the cam main body 4 and the cam main body are integrally formed. The cam body (5) and the rotary cam (7), which are fitted while being caught by the cam groove (6), respectively, and the projection (8) for rotating the rotary cam (7) and inserting it into the cam groove (6) is the cam body ( The cam cam 10 caught by the step 9 of 4) had a rotating cam mechanism.

In addition, the spring 11, which is pushed backwards between the tip cap 3 and the writing member 2, is inserted into the center hole of the rotary cam 7 of the rotary cam mechanism. The cap or knock portion with the clip 21 is connected to the protruding cam bar 10 so that it can be easily detached.

Reference numeral 22 is a spring support.

However, in the conventional example as described above, since the cap or the knock portion is connected to the cam bar 10 so that the cap or the knock portion can be detached, there is a fear that the child will be suffocated by the throat if he peels off the cap or the knock portion. So-called safety caps or safety knocks designed to avoid suffocation by allowing air to flow even if swallowed, such as forming air holes in the caps or knocks or devising irregularities in the caps or knocks. The addition is proposed.

The cam body 4 is installed on the inner surface of the front outer cylinder 1 while the writing member 2 is fitted in the front outer cylinder 1 as shown in FIG. 1. And the cam body 4, the rotary cam 7 which is engaged and fitted to the cam surface 5 and the cam groove 6 of the cam body 4, and the rotary cam 7 by rotating the cap groove. The cam cam 10 is composed of a cam bar 10 in which the projection 8 inserted into the cam 6 is caught by the step 9 of the cam body 4, and the center cam of the rotary cam 7 In the writing instrument consisting of a spring 11 for pushing the writing member 2 is pushed toward the rear, the writing cylinder 2 is installed so that the rear cylinder 12 is not detachable to the cam bar 10 protruding from the cam body (4). It is structured.

In this way, since the left cylinder 12 is installed in the cam bar 10 so as not to be detachable, there is no fear that children will swallow the left cylinder 12 and suffocate, and in particular, a separate means for securing safety is required. There will be no.

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

1 is an explanatory cross-sectional view showing the configuration of an embodiment of the present invention writing instrument as an example applied to the bowl pen, Figure 2 is a partially exploded side view.

In the figure, reference numeral 1 is a front outer cylinder, 2 is a writing member for a bowl pen inserted in the front outer cylinder 1, and 3 is a front end cap attached to the front outer cylinder 1, for example, by screwing.

In addition, the inner body of the front outer cylinder (1) is provided with a cam body (4), for example, the cam groove (6) for each cam row 6 of the six-row cam groove 6 of the cam body (4) toward the cam surface (5) The front outer cylinder 1 is formed by inserting the block portion 15 formed on the outer surface of the cam body 4 into the annular recess 14 formed on the inner surface of the front outer cylinder 1 by forming the slit 13 therefrom. Cam body 4 is fitted to the inner surface of the structure is configured to be mounted.

Reference numeral 7 denotes a rotary cam hooked and fitted to the six cam faces 5, the three cam grooves 6, and the three slits 13 of the cam body 4, respectively, 10 indicates that the rotary cam 7 is improved. The six projections 8 inserted into the three cam grooves 6 and the three slits 13 are cam bars that are hooked to the step 9 of the cam body 4. These cam bodies 4, the rotary cam 7 and the cam bar 10 constitute a known rotating cam mechanism.

In addition, the projections 19 are formed on the outer surfaces of the two cutouts 18 formed by the cutouts 17 formed on the opposite portions of the shaft 16 of the rotary cam 7, respectively, and the cambars 10 have the inner surface. The locking portion 20 is formed in the projection portion 19 is caught, the rotation cam 7 is connected to the cam bar 10 by engaging the projection 19 and the locking portion 20, The writing member 2 is fitted into the center hole of the rotary cam 7 so as to be pushed backward by the spring 11 sandwiched between the tip cap 3 and the spring rest 22.

The rear cylinder 12 is attached to the ring 23 provided on the cam bar 10 so that the rear cylinder 12 having the clip 21 is not detached from the cam bar 10 protruding from the cam body 4. The locking groove 24 formed in the cylindrical portion of the configuration is coupled to prevent detachment.

On the other hand, in this embodiment, the rubber cylinder is used as the inner cylinder 1, and the point which is easy to hold is considered. In addition, when the rear cylinder 12 is integrally installed in the cam bar 10, the number of the projections 8 of the cam bar 10 is reduced by, for example, one or two, so that the cam bar 10 is easily bent. (8) The number of numerals may be reduced by, for example, one or two, so that the cam bar 10 may be inserted from the rear of the cam body 4 so as not to be detached.

In the present embodiment configured as described above, when the rear cylinder 12 is knocked, the rotary cam 7 is repeatedly rotated by a predetermined angle through the cam bar 10 which is coupled so as not to be detached and rotated. As in the related art, when the rotary cam 7 is alternately caught or inserted into the cam surface 5 and the cam groove 6 or the slit 13 of the cam body 4, the pen tip 2a of the writing member 2 is caught. ) Can be written by maintaining the state protruding from the front end of the front end cap (3) of the front cylinder (1) against the spring force of the spring (11).

Also, when fitted, the pen string 2a of the writing member 2 is drawn from the front end of the tip cap 3 by the spring force of the spring 11.

And since the left cylinder 12 is coupled to the cam bar 10 so as not to be detached and detached by the locking of the ring 23 and the locking groove 24, there is no opening for children to suffocate the left cylinder 12, in particular, There is no need to devise a separate safeguard.

As described above, according to the present invention, since the rear cylinder 12 is installed on the cam bar 10 so that the rear cylinder 12 is not detachable, there is no fear that the rear cylinder 12 may be pulled out, thereby providing a safe writing instrument for the child.

Claims (5)

The cam body 4 is provided on the inner surface of the front cylinder 1 in which the pen core member 2 is fitted, and this cam body 4 and the cam surface 5 and cam groove 6 of this cam body 4 are provided. A cam (7) hooked or fitted to the cam cam (4), and a projection (8) for rotating the cam (7) to fit into the cam groove (6) is hooked to the step (9) of the cam body (4). In the writing instrument in which the rotating cam mechanism is formed by the bar 10, the writing member 2 is fitted into the center hole of the rotating cam 7 and is pushed backward by the elastic force of the spring 11, Writing instruments characterized in that the rear cylinder 12 is installed on the cam bar 10 protruding from the cam body 4 so as not to be detachable. 2. The cam body (4) according to claim 1, wherein a cam body (4) formed by forming a slit (13) from a cam surface (5) part of the cam groove (6) of the cam body (4) is fitted to the inner surface of the front cylinder (1). Writing instruments characterized in that it is. The writing instrument according to claim 1, wherein the cam body (4) is fitted to the inner surface of the front cylinder (1) by the concave portion (14) and the convex portion (15). The cam bar 10 according to claim 1, wherein a protrusion 19 is formed on an outer surface of the cut piece 18 in which the cutout portion 17 is formed at the shaft portion 16 of the rotary cam 7. The writing instrument, characterized in that the engaging portion 20 is formed on the inner surface of the projection (19) is caught to be connected to the rotary cam (7) to the cam bar (10). According to claim 1, wherein the rear cylinder 12 is integrally installed on the cam bar 10 and the number of the projections 8 of the cam bar 10 is reduced so that the cam bar 10 is easy to bend. A writing instrument characterized in that it is fitted from the back of (4).