KR820002568Y1 - Writing instrument - Google Patents

Abstract

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Description

Handwriting

1 is a partial surface breaking view showing the internal structure of the writing instrument with the ballpoint pen element and the sharp pencil element in the stowed position,

2 is a partial cross-sectional view of the back side of the first diagram,

A partial cross-sectional view showing the state in which the pencil element as shown in FIG. 3 is brought into the writing position by the rotation of the upper shaft case,

4 is a partial cross-sectional view showing a state in which the upper shaft case is shifted in the downward axial direction to push the mechanical pencil element in the writing position of FIG.

Fig. 5 is a cutaway view of the ballpoint pen element in the writing position as seen from the curved casing side.

Figure 6a is a cross-sectional view taken along the line A-A of FIG.

(b) is a sectional view taken along the line B-B of FIG.

(c) cross-section C-C line,

7 is a broken perspective view showing a cam mechanism,

8 is a partial cross-sectional view showing the internal structure of the mechanical pencil element,

9 is an exploded explanatory diagram of each element of the cam mechanism,

10A to 10D are explanatory diagrams for explaining the movements of both the sharp pencil elements to the writing position, the storing position and the center pushing position in relation to the cam mechanism.

The present invention relates to a writing instrument in which a knock mechanical pencil element and a ballpoint pen element are housed in one coaxial case.

In other words, the present invention accommodates a knocked mechanical pencil element (hereinafter referred to as a pencil element) and a ballpoint pen element in the lower shaft case, and can be rotated around the shaft with respect to the lower shaft case. Advancing both writing elements from the writing tip opening of the lower shaft case to the writing position by pivoting the upper shaft case containing the cam mechanism that engages the writing elements and alternates these elements in the axial direction about the axis. Retract to the storage position in the lower shaft case so that when the electrical pencil element is in the writing position, the upper shaft case can be axially shifted relative to the lower shaft case, thereby pushing out the shim of the electrical pencil element. Operation, and the upper shaft case is lower shaft cable when the electric ballpoint pen element is in the writing position. It will be on the features you configured for engaging trend inability Kane.

The two-color ball-point pen elements are conventionally stored in the lower shaft case, and the upper shaft case containing the cam mechanism to be engaged with these writing elements is reciprocally rotated at an angle around the shaft, thereby alternately moving both writing elements to the writing position or the storage position. Although writing instruments for storing are known, since the upper shaft case cannot be moved in the axial direction with the mechanism of the writing instruments, knock operation cannot be performed even if a pencil element is stored instead of a ballpoint pen element.

The present invention has been conceived in light of such circumstances, and the pencil element and the ballpoint pen element are alternately shifted to the writing position by rotating the upper shaft case to the left and right around the axis, and when the pencil element is shifted to the writing position, The shaft case can be traversed in the axial direction with respect to the lower shaft case, thereby allowing the shim to be pushed out, and when the ballpoint pen element is shifted to the writing position, the axis of the upper shaft case is prevented from translating. It is intended to provide a compound writing instrument that is simple in structure, smoothly and reliably transitions between both writing elements to the writing position, and further enables axial-slide shim pushing operations.

Hereinafter, the present invention will be described by the embodiments shown in the drawings.

1 is a partial cross-sectional short wave diagram showing the internal structure of the writing instrument of the present invention in which the ball-point pen element and the mechanical pencil element are in a retracted position, and FIG. 2 is a partial cross-sectional fracture view of FIG. Partial cross sectional view showing the state that the element is in the writing position by the rotation of the upper shaft case, FIG. 4 shows the upper shaft case in the downward axial direction to push the mechanical pencil element in the writing position of FIG. Fig. 5 is a partial cross sectional view showing the state in which the cut is made; FIG. 6A is a cross-sectional view taken along line AA of FIG. 1, (b) is a cross-sectional view taken along line BB of FIG. 1, (c) is a cross-sectional view taken along line CC of FIG. 3, FIG. 7 is a broken perspective view showing a cam mechanism, and FIG. Some cross-sectional views showing the internal structure, FIG. 9 is an exploded explanatory view of each element of the cam instrument, and FIGS. 10A-D show the movement of the two mechanical pencil elements to the writing position, the storage position, and the soft extrusion position in relation to the cam instrument. It is an explanatory explanatory drawing for demonstrating. In the drawing, reference numeral 1 denotes a lower shaft case, in which a pencil element 3 and a ballpoint pen element 3 'are housed. The rear end of both elements (3) (3 ') is connected to the rod (5) (5') with a connecting sleeve (4 ') (4), and the slider (7) at the upper end of the rod (5) (5'). (7 ').

A cuffing sleeve 19 is tightly inserted into the upper lumen of the lower shaft case 1, and a lower shaft 20 of the guide rib 9 is inserted into the cuffing sleeve 19.

The ring-shaped protrusion 21 formed on the guide rib 9 touches the upper end surface of the lower shaft case 1 to serve as a stopper. Thus, the lower shaft case 1 and the guide rib 9 are firmly connected.

The guide ribs 9 are cylindrical in shape, and the guide spheres 10, 10 '(see FIG. 10) for guiding the sliders 7, 7' in the axial direction are opposed to each other 180 degrees apart from each other in the radial direction. It is snowy.

Coil springs (6) (6) with the sliders (7) (7 ') at the ends of the rods (5) (5') in this guide (10) (10 '). ') With help, it is elastically held and guided in the axial direction by the guide sphere 10 (10'). Below the guide sphere 10 (10 '), the width | variety end part 20' is formed, and the lower end of the coil spring 6 (6 ') is supported by this end part 20'.

An axle head 16 is formed in the guide rib 9 through the end part, and the cam 16 of the shape shown in the developed view of FIG. 9 and FIG. 10 is formed in the axle head 16 around it.

As shown in FIG. 10, the cam 18 is composed of a lowermost flat surface 18a, and subsequent two inclined surfaces 18b and 18b ', and the inclination angles of these inclined surfaces are the same, and the cam 18 is the head. (16) It is not formed in the whole pole, but is formed leaving the part 17a corresponding to the inner side surface of the central stopper 12 center side of the curved casing 8 mentioned later. The guide ribs 9 slide into the curved casing 8 freely as shown in FIGS. 1 to 4 and 9.

In this curved casing 8, a slide mask surface is formed, as is apparent from FIGS. 9 and 10. This slide cam surface has a flat portion 15 at its top as shown in the drawing, and a slide inclined surface 13 and 13 to merge downward from left and right symmetrically with the flat portion 15 as a positive side. The notch engaging part 14 is formed in the joining position of (13). This notch engaging part 14 is cut out so that it may engage with the front-end | tip part of the arrowhead type engaging part 11 (1 ') which protruded on the surface of the slider 7 (7'). The inclined surfaces of the arrowhead engaging portions 11 and 11 'engage with and slide with the slide cam surface in response to the rotation of the curved casing 8. On the other hand, as shown in FIG. 6, FIG. 7, and FIG. 9, the fan-shaped stopper 12 protrudes in the upper inner periphery of the curved casing 8. As shown in FIG. This stopper 12 engages with the cam 18 of the shaft 16 as will be described later. The fixing ring 17 is fitted to the shaft head 16 after inserting the curved casing 8 outside the guide rib 9 (FIGS. 3 and 4).

The fixed ring 17 is cooperative with the fan stopper 12 when the curved casing 8 comes to the position of FIG. 3 so that the curved casing 8 due to the pressing force of the springs 6 and 6 'is shifted upward. It acts to discourage doing. The upper shaft case 2 is fixedly attached to the outer circumference of the curved casing 8 and its lower end overlaps with the upper end of the lower shaft case 1 so as to be slidable. The curved casing 8 can be rotated to the left and right around the axis with respect to the guide rib 9 as will be described later. When the pencil element 3 is in the writing position, the curved casing 8 can be axially traversed by a predetermined section. ) Is equally rotatable either to the left or right with respect to the lower axle case 1 connected to the guide sleeve 9, and can be shifted in the axial direction when the pencil element 3 is in the writing position. (Details will be described later.)

The pencil element 3 has a chuck mechanism.

This chuck mechanism part is shown in FIG. (5) is the above-mentioned rod, and also serves as a reservoir of Yeonsim 30. The connecting rib 4 is fixedly fixed to the lower part of the lower part 5 of the rod 5, and the middle transition rib 22 is fixed to the inside of the lower part of the connecting rib 4, and the chuck 25 is fixed to the rib 22. .

A pencil tip end portion 3b is formed at the tip end of the pencil body casing 3a. The casing 3a has a connecting cylinder 3c connected to the upper portion thereof, and a spring 23 is fitted in the middle between the upper end of the connecting cylinder 3c and the lower end of the connecting rib 4.

The cover casing 24 covers the connecting sleeve 4 and the connecting cylinder 3c and forms part of the pencil body casing 3a.

In the space between the lower end of the connecting tube 3c and the impact stop end 3e, a tightening rib 26 for cooperating with the chuck 25 is provided with a sliding material in the axial direction. The bore is formed in a tapered shape so as to gradually increase toward the distal end portion 3b. Reference numeral 27 denotes a rubber-like elastic retaining ring incorporated in the tip bent portion 3b.

The filling portion 28 is formed in the upper portion of the tip portion 3b to be in contact with the opening portion 29 when the pencil body 3 is turned toward the tip opening portion 29 of the lower shaft body 1 in order to push out the core. It is. The shape of pushing out the core 30 by this chuck mechanism is mentioned later.

Next, the shape of the forward retreat transition from the writing instrument of the present invention to the writing position or the storing position of the pencil, the element and the ballpoint pen element will be described with reference to the developed view of FIG.

FIG. 10B shows a state in which both writing elements 3 and 3 'are in the storage position together. In this state, the inclined surfaces of the arrowhead engaging portions 11 and 11 'of the ends of the rods 5 and 5' to be guided in the guide holes 10 and 10 'of the guide rib 9 are each curved casing ( It is elastically in contact with the middle of the slide inclined surface 13, 13 of 8) with the help of springs 6, 6 '. At this time, the fan-shaped stopper 12 in the curved casing 8 comes in contact with the cam 18 inclined surface 18b of the shaft 16. The dashed-dotted line shown below both writing elements 3 (3 ') represents the position of the front end opening 29 of the lower shaft case 1.

First, in order to advance the ballpoint pen element 3 to the writing position, the upper shaft case 2, that is, the curved casing 8 attached thereto is rotated to the position indicated in FIG. 10A. In this rotation, the inclined side of the arrowhead engaging portion 11 of the pencil element 3 rises while sliding with respect to the slide inclined surface 13 of the curved casing 8 and is held by the flat portion 15. On the other hand, the arrowhead engaging portion 11 of the ballpoint pen element 3 'slides while descending with respect to the slide inclined surface 13 of the curved casing 8, and is engaged with the notch engaging portion 14 when the top of the slide inclined surface is reached. .

At that time, the fan-shaped stopper 12 of the curved casing 8 enters into the gap t formed between the lowermost flat surface 18a of the cam 18 and the front surface of the guide rib 9. Accordingly, the curved casing 8 is slightly downwardly moved in the position of FIG. 10B.

The size of this gap t is a dimension in which the curved casing 8 cannot be shifted in the axial direction with respect to the guide rib 9 when the stopper 12 is inserted therein.

In the state of FIG. 10A, the ballpoint pen element 3 comes to the writing position, and the curved casing 8 and the upper side case 2 fixed thereto are incapable of being locked in the axial direction.

Next, in order to advance the pencil element 3 to the writing position, the upper shaft case 2, i.e., the curved casing 8, is rotated to the position shown in Fig. 10C (180 ° to 10B in Fig. 10A position). 90 degrees in the Fig. Position). In this rotation, the inclined side of the arrowhead engaging portion 11 of the pencil element 3 slides downward on the slide inclined surface 13 of the curved casing 8, and finally, the notch engaging portion, which is the vertex of the slide inclined surface. Engage in (14) and stop.

The pencil element 3 thus comes to the writing position.

On the other hand, the fan-shaped stopper 12 slides the inclined portion of the cam 18 upward to reach the position of 17a and is released from engagement with the cam 18, but is attached to the head 16 as shown in FIG. In contact with the lower end surface of the fixed ring 17, the one end above the guide rib 9 due to the pressing force of the springs 6 and 6 'is blocked.

Moreover, since the fan-shaped stopper 12 comes to the said position, the position with respect to the guide rib 9 of the curved casing 8 is shifted upward corresponding to the movement of the fan-shaped stopper 12. As shown in FIG.

As described above, in the state of FIG. 10C, the fan-shaped stopper 12 is in the corresponding position of the corresponding 17a on the inclined surface 18b of the cam 18 and is fixed because of the pressing force of the springs 6 and 6 '. ) And the curved casing 8, i.e., the upper shaft case 2, is pressed down in the axial direction and can be freely changed without being obstructed to the position shown in FIG. The transition of the curved casing 8 in the axial direction is, of course, the pencil element 3 in the axial direction.

In the present invention, the transition distance of the pencil element 3 along the transition in the axial direction of the curved casing 8 is such that the impact blocking portion 28 of the pencil element 3 is provided at the tip opening 29 of the lower shaft case 1. The distance between the bottom surface of the fan-shaped stopper 12 and the front surface of the guide rib 9 in the state shown in FIG. 10C so as to be a dimension capable of abutting the shim in contact with the shim, that is, the transition distance that the fan-shaped stopper 12 moves in the axial direction It is decided.

Thus, the curved casing 8, i.e., the upper shaft case 2 attached thereto, is reciprocated while being pressed in the axial direction and released, thereby smoothly and surely removing the shim of the pencil element and making it possible to write. Elongation of the pencil element 3 will be described with reference to FIG. 8. When the pencil element 3 comes to the writing position shown in Fig. 10c, and then the lower shaft case is fixed to press the upper shaft case 2, that is, the curved casing 8, and shift in the direction of the arrow, the pencil element 3 As shown in FIG. 10d, the downward direction is further shifted, and as shown in FIG. 7, the impact stopping portion 28 of the pencil element 3 touches the lower shaft case 1 opening 29. As shown in FIG. When the curved casing is pushed downward again, the impact blocking portion 28 contacts the opening 29, so that the connecting rib 4 connected to the rod 5 covers the casing against the spring pressure of the spring 23. It acts on (24) and slides toward the tip of the pencil element. Intermediate chuck rib 22 and chuck 25 connected thereto by sliding of the connecting sleeve 4 are transferred to the tip of the pencil element and then the core 30 is held in the same operation of the chuck 25 and the tightening rib 26. It is pushed toward the tip side of this pencil element. However, when the chuck 25 is pushed back toward the tip of the pencil element, the tightening rib 26, which has been transferred with the chuck, touches the impact stop end 3e, and the trend is stopped, so that the chuck 25 falls from the tightening rib 26. , Year 30 is released from the holding force of the chuck 25. Thus, the core 30 falls from the tightening rib 26 and the core 30 is released from the holding force of the chuck 25. Thus, the year 30 is pushed out by the transition distance of the tightening sleeve 26. Subsequently, the pressing on the curved casing 8, that is, the upper shaft case 2, is released, with the aid of the spring 23 in the state where the soft core 30 is held by the elastic retaining ring 27. The transition rib 22, the connecting rib 4, and the rod 5 return to their original positions, and the chuck 25 again holds the soft core 30 firmly.

By repeating the above-mentioned reciprocation of the upper shaft case 2 by the pressing, the soft core 30 can be taken out from the opening 3d of the tip bent portion 3b in a good writing state.

In addition, a preliminary core can be stored in the rod 5 lumen 5a, and the preliminary core can be continuously pushed out after the core 30.

Supplementing the preliminary core with the lumen 5a is made possible by allowing the connecting rib 4 to be detached from the rod 5.

As described above, according to the present invention, the pencil element and the ball pen element can be smoothly and reliably placed in the writing position and the storing position alternately by the rotation of the upper shaft case, and in the knocked manner by shifting the upper shaft case in the axial direction. There is a practical effect of providing a writing instrument with a very simple and durable structure that can perform shim extruding operation.

Claims (1)

Lower shaft case (1) having a tip opening (29), having two guide grooves (10), (10 ') extending in the axial direction facing each other in diameter and at the same time in the rear end of the lower shaft case (1) A fixed guide sleeve 9 is disposed in the electric lower shaft case toward the writing end of the front end opening 29 of the lower shaft case 1, and at each rear end of the guide groove 10, 10 '. Knock-type mechanical pencil element 3 and ballpoint pen element 3 'with sliders 7 and 7' guided in correspondence with any of < RTI ID = 0.0 > 1, < / RTI > The guide sleeve is rotatable and the guide sleeve is enclosed in a axial direction with respect to the guide sleeve 9, and the two writing elements 3 and 3 'are alternately rotated every 180 ° rotation. The sliders 7 and 7 'to advance to the writing position or to retract to the stowed position. The slide inclined surface 13 engaged with the spring pressure 13, the notch engaging portion 14 and the curved casing (8) formed on the lower surface, the guide sleeve (9) is the head portion And a cam 18 around the axle head, and a fan stopper 12 engaged with the cam 18 is provided at the upper end of the curved casing 8, and the cam 18 is provided. And the fan stopper 12 are engaged with each other when the pencil element 3 protrudes from the tip opening portion 29 of the lower shaft case 1 so that the curved casing for the guide sleeve 9 ( 8) the axial reciprocation of the axial direction is enabled, and this transition is transmitted to the pencil element 3 in the writing position through the slider 7 which engages the cutout engaging portion, so that the feeding of the core by the knocking operation is performed. On the other hand, the ballpoint pen element 3 ' When protruding from the tip opening 29 of the shaft casing (1) mesh with each other writing instrument, it characterized in that the transition of the axial direction of the curved casing (8) is configured to stop.