KR910002832B1 - Ballpen - Google Patents

Abstract

The writing utensil combines two kinds of points in a casing for the user to select either of the points for its own convenience in writing. A cam face (7) is integrally formed with the inner wall of the upper casing (6) to protrude, and the center of a protrusion (8) is formed with a projective stopper (9) to stop the upper face of the guide shaft (10) when a ball point is pushed out. The stopper (9) however slips into the recess (12) formed on the upper part of the guide shaft (10) when the pencil lead is pushed out.

Description

Compound writing instruments

1 is an exploded perspective view showing main parts of the present invention.

2 is a perspective view showing a part of the upper outer incision.

3 is a longitudinal cross-sectional view of the upper outer body.

Figure 4 is a yaw perspective view of a partial incision in the upper outer body in the state using the present invention as a pencil.

Figure 5 is a yaw perspective view of a partial incision only the upper outer body in the state using the present invention as a ballpoint pen.

6 is an assembly longitudinal cross-sectional view of the state using the present invention as a mechanical pencil.

Figure 7 is an assembly longitudinal cross-sectional view of the state using the present invention as a ballpoint pen.

8 is a cross-sectional view taken along the line AA ′ of FIG. 6.

9 is a cross-sectional view taken along the line B-B 'of FIG.

10 is an enlarged cross-sectional view of the main portion of the present invention.

* Explanation of symbols for main parts of the drawings

1: composite writing instrument body 2: lower outer cylinder

3: sleeve 4, 5: between operation

6: upper outer body 7:

7a: triangular groove 8: protrusion

9: Stopping protrusion for flow prevention 10: Guide shaft

11: hanging jaw 12: operation groove

The present invention relates to a composite writing instrument in which two kinds of writing pens having different kinds of strokes are combined in one writing instrument so that the desired writing instrument can be exposed and used according to a user's simple operation selection.

Conventional general writing instruments, such as ball-point pens and signature pens, such as pens and writing pens, and pencils to achieve the effect of a pencil, such as a combination of writing instruments, the writing instrument desired by a separate operation mechanism or the position of the upper body lower case The center tip was protruded to be used.

As such a structure, there were those disclosed in Korean Utility Model Publication No. 579 Publication No. 82-2567, but they are used to assemble a separate actuator having a complicated structure of a cam actuator for selectively exposing the sharp core member and the ball pen core member. Therefore, the structure and manufacturing is complicated, as well as highly skilled and effort required to assemble it, there was a problem that often malfunction and failure occurs because the correct operation is not made in use.

In addition, when used as a mechanical pencil, an artificial pressing operation is required to expose the sharp core member at a predetermined interval by releasing the chuck connected to the end of the sharp core cylinder, and the conventional composite writing instrument is used to protrude the sharp core. Since the operation occurs even in a state where the ballpoint pen is exposed, there is a problem in using it as a ballpoint pen.

In other words, when used as a mechanical pencil, a distribution range is required to float the shim, but when it is used as a ballpoint pen, there must be no flow of the ballpoint pen once exposed from the tip of the lower case. There is a problem that the writing state becomes unstable and thus the writing state, that is, the handwriting becomes poor.

Therefore, an object of the present invention, by forming a cam operating portion for selectively exposing the ball pen member of the sharp shim member on the inner peripheral surface of the upper outer body, the production and assembly is simple, even if not skilled in the art can be easily assembled and manufactured, preventing malfunction and failure I want to be able to.

Another object of the present invention is to be firmly supported without flowing in the exposed state of the ballpoint pen member to prevent the writing feeling becomes unstable or the writing state, that is, the writing is poor.

The purpose of the present invention, the guide grooves are vertically dug on both sides of the sleeve screwed to the lower outer cylinder to be intermittent to the upper and lower reciprocating cam surface along the guide groove between the operation inserted into the upper surface of the ball pen core and the sharp core cylinder, When the upper body is rotated to the position where the protruding piece is caught on the locking projection protruding into the guide shaft formed integrally at the upper end of the shaft, the sharp core and the ball pen core are alternately exposed to the perforated hole in the center bottom of the lower outer cylinder. The cam surface protrudes integrally with the inner circumferential surface of the upper outer body, and at the center of the protruding piece, protrudes a flow preventing stop projection that is caught on the upper end surface of the guide shaft in a state where the ball pen core is exposed, and the upper end of the guide shaft. The composite writing implement characterized in that it is formed by recessing the recess into which the stop projection is fitted in a state where the sharp core is exposed. By providing a.

Hereinafter will be described in detail according to the embodiment shown in the accompanying drawings of the multi-functional pen according to the present invention.

In the composite writing instrument of the present invention, as shown in Figs. 1 to 10, guide grooves 3 'and 3 "are vertically dug on both sides of the sleeve 3 screwed to the lower outer cylinder 2. The operation intervals 4 and 5 fitted to the upper surfaces of the ball point pen core C and the sharp core cylinder D are intermittently connected to the upper and lower reciprocating cam surfaces 7 along the guide grooves 3 'and 3 ". And sharp core (D) when the upper outer body (6) is rotated to the position where the protruding piece (8) is caught on the locking projection (11) protruding by the guide shaft (10) integrally formed at the upper end of the sleeve (3). And the ball pen nib C alternately exposed to the through hole 2 'perforated in the central bottom surface of the lower outer cylinder 2, the cam surface 7 on the inner circumferential surface of the upper outer body 6; Protrudingly formed integrally, in the center of the protruding piece (8), protruding to form a flow preventing stop projection (9) caught on the upper end surface of the guide shaft portion 10 in a state where the ball point pen (C) is exposed, the guide On the upper end side of the shaft portion 10, the sharp core (D) In the state in which the) is exposed, it is made by recessing the operation recess 12 into which the stop projection 9 is fitted.

In the figure, reference numeral 7a is a triangular groove, 20 is a cap, 21 is a clip, 22 is a spring for elastically supporting the operation (4) and (5), 23 is a chuck installed at the end of the sharp core cylinder (d), 24 , 24 'is a triangular projection formed on the front of the operation (4), (5).

In the composite writing device of the present invention configured as described above, the operation grooves 4 and 5 are respectively positioned in the guide grooves 3 'and 3 "which are dug to both sides of the sleeve 3, respectively, and springs from the bottom surface thereof. After assembling the sharp core cylinder (D) and the ball pen core (C) to both sides (22), screw the spiral portion and the lower outer cylinder (2) formed at the lower end of the sleeve (3).

"형으로 경사진 상단부를 강제압입하는 방법으로 조립하면 슬리브(3)와 상부외체(6)가 상대 회동은 가능하나 이탈되지 않게 조립되어 상부외체(6)의 상단에 또 다른 캡(20)을 나사조립하여 외관을 미려하게 함과 동시에 내부구조를 외부에서 관찰하지 못하게 한다.The top of the upper outer body 6, which is slightly elastic with the synthetic resin material, is formed by the "

When assembled by a method of forcibly press-fitting the upper end of the inclined shape, the sleeve 3 and the upper outer body 6 can be rotated relative to each other, but are assembled so as not to be separated. Screw assembly makes the exterior beautiful and at the same time prevents the internal structure from being observed from the outside.

"형의 걸림턱(11)을 돌출시켜 상부외체(6)에 안내축부(10)의 위치로 돌출된 돌출편(8)의 끝단부가 걸려지게 함으로써 캠면(7)이 샤프심통(D)을 작동시키기 위해 작동간(4)의 윗면과 삼각홈(7a)이 일치되는 상태에서 제8도에서 예시한 바와 같은 상태로 걸림턱(11)의 일측과 돌출편(8)의 위치가 일체케 하고, 다시 볼펜심(C)을 사용키 위해 볼펜심(C)의 상단에 조립된 작동간(5)의 중심에 캠면(7)의 삼각홈(7a)이 일치될 때 제9도에 예시한 바와 같은 상태로 또 다른 회전위치에서 걸림턱(11)이 돌출편(8)의 위치를 정지케 함으로써 사용자가 임의의 위치로 적당히 회전조절하더라도 그 위치를 정확히 선택할 수 있다.To one side of the guide shaft 10 "

The cam face 7 operates the sharp core cylinder D by protruding the engaging jaw 11 of the " shape so that the upper end 6 of the protruding piece 8 protrudes to the position of the guide shaft 10. In order to make the upper surface of the operation section 4 and the triangular groove 7a coincide with each other so that the position of the one side of the engaging jaw 11 and the protruding piece 8 are integrated as shown in FIG. As illustrated in FIG. 9, when the triangular groove 7a of the cam surface 7 coincides with the center of the operating rod 5 assembled on the upper end of the ball pen core C to use the ball pen core C again. By stopping the position of the protruding piece 8 in another rotational position in the state, even if the user adjusts the rotation to an arbitrary position, the position can be accurately selected.

The user selects and uses a mechanical pencil or ballpoint pen as follows.

First, in the case of using a mechanical pencil, the lower outer cylinder 2 is gripped and the upper outer body 6 is rotated in one direction (the direction in which the protruding piece is not caught by the locking jaw), and the cam surface 7 integrally formed inside the upper outer body 6. ), The projection piece 8 and the stop projection 9 are rotated at the same time so that the triangular projection 24 of the operation period 4 coincides with the lower top of the cam surface 7, that is, the triangular groove 7a. The photographic cam surface 7 descends while pressing down the side surface of the triangular projection 24 and descends in the compressed state of the spring 22, with a weak sound that the triangular groove 7a and the triangular projection 24 “click”. As illustrated in FIG. 6 at the moment of coincidence, the mechanical pencil chuck 23 is exposed to the outside of the through hole 2 ', in which case the locking jaw 11 and the protruding piece protruding from the guide shaft portion 10 are exposed. 8) the rotation of the upper outer body (6) is further prevented to maintain the sharp core cylinder (D) lowered by the cam surface (7).

As already known, the mechanical pencil needs an operation of repeatedly drawing the core by a predetermined length by the appearance of the chuck 23. In this case, the upper surface of the cap 20 is artificially pressed by the upper external body 6. The upper and lower reciprocating motions are performed, and the chuck 23 is then moved as the upper and lower reciprocating motions are simultaneously received with the sharp core cylinder D while the operation section 4 which is in contact with the top of the cam surface 7 receives the force. As you wander, you will be able to withdraw your Sims a certain length.

As described above with reference to FIGS. 4 to 6 and 8 in the sharp selection position where the end of the chuck 23 is exposed by lowering the sharp core D in order to use the mechanical pencil as described above, Since the position of the stop projection 9 projecting to the center position where the operation recess 12 and the upper outer body 6 protruded perpendicularly to the guide shaft portion 10 are coincident with each other, When the lower operation stop projection (9) is enabled to flow up, down by the guide of the operation groove (12).

At this time, the ball pen nib (C) and the operation (5) connected to the top of it is to maintain the elevated state by the elasticity of the spring 22 due to no external force is applied, and the triangular groove digging into the top of the cam surface (7) ( 7a) and the triangular protrusion 24 is to maintain a limited position that does not apply a large external force to rotate left, right.

In addition, when the user intends to use as a ballpoint pen, the upper surface 6 is rotated in the direction as indicated by the arrow in FIG. Since the triangular groove 7a of the cam surface 7 of the cam surface 7 is rotated at the same time so as to maintain the state in which the operation 4 is lowered, the triangular projection (4) of the operation 4 is shifted to the cam surface 7 where the height is gradually increased. 24 is brought into contact with each other by the elasticity of the spring 22, the sharp core cylinder (D) and the operation (4) is gradually raised and again the operation between the operation of the cam surface (7) is connected to the upper end of the ball pen core (C) ) And gradually lowers and rotates until the projection piece 8 comes into contact with one side of the locking jaw 11, so that the top of the end of the cam surface 7, that is, the triangular groove 7a, is the triangular protrusion 24 of the operation 5. ') Is lowered so that the operating section 5 is positioned at the lowermost end when it is in contact with'), and the sharp core tube D is raised as illustrated in FIG. Will be pensim (C) is lowered is ready to use as a ball-point pen.

In this state, as illustrated in FIGS. 5 to 7 and 9, the stop protrusion 9 is caught on the upper end surface of the guide shaft 10 in a state deviated from the position of the operation recess 12. In the case of using a ballpoint pen which does not need to flow at all, it is possible to prevent the ballpoint pen C from flowing during carelessness or writing by the user.

As described above, in the present invention, the cam surface 7 and the protruding piece 8 and the stopping projection 9 which are configured to selectively lower the ball pen core C or the sharp core D are provided on the inner circumferential surface of the upper outer body 6. It is easy to manufacture, easy to assemble and has a low number of parts because it is protruded, so it can be widely distributed at a low price, so as to reduce the economic burden on consumers, as well as accidental misalignment of the upper outer body (6) and the cam surface (7). It is possible to prevent inadequate or smooth operation, and the upper outer body 6 flows only when the sharp shim appears, and the ball pen shim C can be surely used when used as a ballpoint pen that does not require any up or down flow. It prevents unnecessary operations and eliminates unnecessary operation, and the writing feeling and writing state are good and can be used stably and comfortably.

Claims (1)

Guide grooves 3 ', 3 "are vertically dug on both sides of the sleeve 3 screwed to the lower outer cylinder 2 so as to be inserted into the upper surface of the ball pen core C and the sharp cylinder D (4). ), (5) is intermittent to the upper and lower reciprocating cam surface 7 along the guide grooves 3 ', (3 "), and protrudes to the guide shaft portion 10 formed integrally with the upper end of the sleeve (3). Sharp core cylinder (D) and ball pen core (C) alternately perforate at the bottom surface of the lower outer cylinder (2) when the upper outer body (6) is rotated to the position where the protruding piece (8) is caught on the engaging jaw (11). In a conventional composite writing instrument exposed to the through hole 2 ', the cam surface 7 is integrally formed on the inner circumferential surface of the upper outer body 6, and a ball point pen core C is formed at the center of the projecting piece 8. ) Is projected to form a flow preventing stop projection (9) caught on the upper surface of the guide shaft portion 10 in the exposed state, the upper one side of the guide shaft portion 10, the sharp core (D) in the exposed state Operation groove into which the stop projection 9 is fitted A composite writing instrument, characterized in that it is formed by recessing (12).

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