KR890001646B1 - Composite writing-materials - Google Patents

Abstract

This writing tool combines a propelling pencil and a ball-point pen with an improvement of the push button. The tool has within its rear barrel (2) a cam member (9) for pushing the rear ends of the lead holder (4) and the ball point holder (5) with a push botton (13). Turning of barrel (2) results for the cam member (9) to move in the axial direction the lead (4) and the ball point relative to each other for use. But the push botton pops out knocking only when the lead is pushed out.

Description

Compound writing instrument

1 is a cross-sectional view of an embodiment of a composite writing instrument according to the present invention.

2 and 3 are enlarged cross-sectional views showing (a) and (b) of the connecting portions of the front outer tube and the rear outer tube, respectively, during the first step.

Figure 4 (a) is a plan view of the pen holder.

4 (b) is a cross-sectional view taken along the line A-A of FIG. 4 (a).

5 is an enlarged cross-sectional view of the main part of FIG.

6 is a cross-sectional view taken along line IV-IV of FIG.

7 is a cross-sectional view taken along the line VV of FIG.

8 is a plan view of the cam barrel.

9 is a cross-sectional view of the cam barrel.

10 is a sectional view of another embodiment.

11 is a partially exploded view of the cam barrel of FIG.

12 (a) and 12 (b) and 12 (c) are essential parts of FIG.

* Explanation of symbols for main parts of the drawings

1: Front outer tube 2: Rear outer tube

4: mechanical pencil shaft 5: ball pen shaft

9: cam case 13: knock member

The present invention relates to a compound pen mechanism comprising a mechanical pencil and a ball pen, and more particularly, to a compound pen mechanism in which the knock system of the mechanical pencil is improved. This type of conventional composite writing device is connected to the rear end of the front outer tube so that the rear outer tube can be rotated freely, so that the rear outer cylinder can be rotated, so that the mechanical pencil shaft and the ball pen shaft in the front outer tube are forwarded through the pen delivery mechanism in the rear outer cylinder. When the mechanical pencil shaft is crushed, the lead pencil of the mechanical pencil shaft is sent out forward.

Therefore, in the conventional composite writing device, when using it as a pencil, the rear outer cylinder is rotated to protrude the mechanical pencil, the front outer cylinder is held by hand, and the rear outer cylinder is knocked with a thumb or the like to send out the feelings. Since it was supposed to make the knock operation, there was a problem that it was difficult to knock the rear outer cylinder caught by hand when knocking.

Therefore, the present invention is invented to solve the above problems, when using as a pencil pencil while holding the back outer cylinder while knocking out the knock member extending from the back hinder the hand to hold the outer cylinder It is possible to smooth the knock operation to send out the heart stroke without using it, and also when the writing instrument is not used or when used as a ballpoint pen, the knock part does not come out of the back outer cylinder, thus providing a sophisticated composite writing instrument in terms of design. It is for that purpose.

The composite pen mechanism according to the present invention is connected to the rear end of the front outer cylinder freely and easily attached and detached, and the axial rotation direction is formed in the rear outer cylinder to install the cam can be reciprocated sliding in the axial direction, the front of the cam barrel At the end, the rear end of the mechanical pencil shaft and the ball pen shaft are pressed and hung, and the claw member is pressed against the rear end of the cam barrel so as to be caught. Relative movement in the axial direction so that one of them protrude so that the other sinks.

When the composite pen mechanism of the present invention rotates the rear outer cylinder, the cam barrel is integrally rotated so that the mechanical pencil shaft and the bowl pen shaft are protruded and alternately protruded, and only when the mechanical pencil shaft protrudes, the knock member is removed from the rear end of the rear outer cylinder. Simultaneously protrudes so that the knock member is knocked out to knock out the knock member. In the case of the ball pen shaft, no knock is required so that the knock member does not protrude from the rear outer cylinder.

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

In FIG. 1, reference numeral 1 denotes a front outer cylinder of the compound writing instrument, and reference numeral 2 denotes a rear outer cylinder connected to the rear end of the front outer cylinder 1 so as to be inserted and removed while being rotated freely through the intermediate cylinder 3. .

In more detail, as illustrated in FIGS. 2 and 3, the intermediate cylinder 3 is provided with a plurality of ribs 3a along the axial direction at regular intervals in the circumferential circumferential direction. At the rear end, an annular flange 3b facing outward is formed so that the annular flange 3b is freely rotated into the annular inner groove 2a at the front end of the rear outer cylinder 2, and accordingly, the front end of the rear outer cylinder 2 is formed. The intermediate cylinder 3 extending from the center is pushed into the rear inside of the front outer cylinder 1 via the rib 3a so as to be pushed into and pulled out.

부에 따른 압력걸림등 어떠한 수단을 채용하여도 좋다.In the figure, 1a is a ring. In addition, as the method of making the hook as described above, screwing,

You may employ | adopt any means, such as a pressurization by a negative part.

Accordingly, when the intermediate cylinder 3 together with the rear outer cylinder 2 is pulled out of the front outer cylinder 1, the mechanical pencil shaft 4 and the ball pen shaft assembled and attached to the rear outer cylinder 2 can be inserted. (5) is pulled out so that the core of the mechanical pencil shaft (4) can be refilled or the bowl pen shaft (5) can be replaced. That is, since the lead pencil shaft 4 is connected so that the lead ride 41 can be inserted and pulled out at the front end of the lead pipe 40, the rear outer cylinder 2 is pulled out and then the lead guide from the lead pipe 40. By pulling out (41), we will be able to make up our hearts.

In the mechanical pencil shaft 4, a lead feeding mechanism 43 having a lead chuck, a chuck ring, a first spring 42, and the like is disposed at the front end of the lead guide 41, and the lead pipe 40 The engaging member 6 is connected to the rear end of the shaft, and the whole mechanical pencil shaft 4 is pushed in the retraction direction by the second spring 44 disposed in front of the engaging member 6.

On the other hand, the engaging member 7 is also disposed at the rear end of the bowl pen shaft 5 so that the bowl pen shaft 5 is pushed in the retraction direction by the spring 50 disposed in front of the engaging member 7. have. And the mechanical pencil shaft (4) and the ball pen shaft (5) is connected to the pen holder (8) to reciprocate sliding in the axial direction through the engaging members (6) (7), respectively, the pen holder (8) has two slide holes (8a) (8b) for sliding the reciprocating members 6 and 7 as shown in FIGS. 1 and 4, and the front end thereof As shown in FIG. 3, the movement is regulated by the intermediate cylinder 3 via the step 8c. And the slide guider 12 mentioned later is fixed to 8 d of rear end shaft parts of this pen holder 8 as shown in FIG.

Also, the pen holder 8 and the slide guider 12 do not move even when knocked.

In addition, at the outer circumference of the pen holder 8, a cam barrel 9 which rotates with the outer cylinder 2 while being able to slide reciprocally with respect to the pen holder 8 is disposed.

That is, the cam barrel 9 is fitted so that the outward engagement protrusion 9a of the outer circumferential surface thereof can freely slide reciprocatingly in the guide groove 2b formed in the inner circumferential surface axial direction in the rear outer cylinder 2, as shown in FIG. Therefore, it is configured not only to be hung in the axial rotation direction with respect to the rear outer cylinder 2, but also to be installed to slide freely in the axial direction.

In addition, the cam barrel 9 is formed with a stopper wall portion 9b in contact therewith with the pen holder 8 to regulate the forward movement of the cam barrel 9. The fitting shaft portion 8d penetrates through the center hole 9c of the cam barrel 9. A knock distance A is secured between the stopper wall portion 9b and the pen holder 8 so as to knock the mechanical pencil shaft 4 as shown in FIG. The knock distance A is also secured between the engaging member 6 and the stepped portion 8c of the pen holder 8. However, since the knock of the bowl pen shaft 5 is not required between the engaging member 7 and the step 8c of the bowl pen shaft 5, there is no knock distance. The cam barrel 9 has a front cam surface 10 and a rear cam surface 11, as shown in FIGS. 8 and 9, and the front cam surface 10 has curved curved cam surfaces 10a and 10b on both sides. ), A flat front end surface 10c continuous at the front end thereof, and a rear end surface 10d with its rear end continuous to the curved slope cam surface 10a, 10b.

On the other hand, the rear cam surface 11 has a curved slope and has a front end catching portion 11a and a rear end cutout portion 11b.

For example, when the engaging member 6 of the mechanical pencil shaft 4 is hooked to one of the curved inclined cam surfaces 10a of the front cam surface 10, the other curved inclined cam surface 10b at the symmetrical position will be placed on the bow. The engaging members 6 and 7 are pressed by the pushing force of the springs 44 and 50 to the front cam surface 10 so that the engaging member 7 of the pen shaft 5 is engaged. do.

Therefore, when the engaging members 6 and 7 are held in the middle portion of the curved inclined cam surfaces 10a and 10b by the rotation of the cam barrel 9, the mechanical pencil shaft 4 and the ball pen shaft 5 ) Is inserted into the front outer cylinder (1), and the engaging member (6) of the mechanical pencil shaft (4) is caught on the front end surface (10c), so that the mechanical pencil shaft (4) protrudes At the same time, the engaging member 7 of the bowl pen shaft 5 is caught by the rear end surface 10d so that the bowl pen shaft 5 is in the recessed storage position. On the contrary, when the engaging member 6 is caught by the rear end surface 10d and the engaging member 7 is caught by the leading end surface 10c, the mechanical pencil shaft 4 is in the stowed position and the bowl pen shaft 5 is in the protruding position.

In this manner, the mechanical pencil shaft 4 and the ball pen shaft 5 alternately move forward and retreat by rotation of the cam barrel 9, and they are stored at the same time.

As shown in FIGS. 1 and 5, the front end of the slide guide 12 is fitted into the rear end of the cam barrel 9 and is connected to the rear end shaft 8d of the pen holder 8. In addition, the slide guide 12 is fitted to the outside so that the knock member 13 inserted into the rear end of the rear outer cylinder 2 can be slid freely.

In the present embodiment, the knock member 13 is inserted into the eraser rubber holder 13a fitted to slide freely on the slide guide 12 inserted into the rear inner side of the rear outer cylinder 2 to cover the eraser rubber 14. The cap 13b extends from the rear of the rear outer cylinder 2. Here, the eraser rubber holder 13a is provided with an engaging piece 13c on the outer circumferential surface of the back cam surface 11 of the cam barrel 9, as shown in FIGS. 1 and 5 and 7. A slide groove 13d is formed on the inner circumferential surface thereof, and the slide groove 13d is fitted to the guide protrusion 12 on the outer circumferential surface of the slide guide 12 so as to be able to slide easily. In this way, the engaging piece portion 13c of the eraser rubber holder 13a is maintained on the rear extension line of the engaging member 6 of the mechanical pencil shaft 4.

Thus, the mechanical pencil shaft 4 and the eraser holder 13a are mutually rotated by the rotation of the cam barrel 9 according to the position of the engaging member 6 of the mechanical pencil shaft 4 and the engaging piece 13c. When the mechanical pencil shaft 4 protrudes in the opposite direction, the cap 13b protrudes from the rear outer cylinder 2, and the mechanical pencil shaft 4 and the ball pen shaft 5 alternately move forward. It is supposed to pop out. The eraser rubber holder 13a is pushed forward by the rear spring 15 so that the engaging piece 13c is pressed against the rear cam surface 11 of the cam barrel 9 to be engaged.

Next, the operation of the above embodiment will be described.

When the rear outer cylinder (2) is rotated, the cam barrel (9) rotates integrally therewith, so that the engaging member (6) of the mechanical pencil shaft (4) moves one curved inclined cam surface (10a) toward the front engaging surface (10c). While moving, the engaging member 7 of the bowl pen shaft 5 moves the other curved bevel cam surface 10b toward the rear end surface 10d, so that the mechanical pencil shaft 4 moves forward and the bowl pen shaft is moved. (5) moves backward. At the same time, when the mechanical pencil shaft 4 moves forward, the eraser rubber holder 13a moves backward against the spring 15 so that the mechanical pencil shaft 4 moves from the front end of the front outer cylinder 1. At the same time as protruding, the cap 13b protrudes from the rear end of the rear outer cylinder 2.

In this case, the ball pen shaft 5 is moved back and accommodated in the outer cylinder (1).

When the cap 13b is knocked in such a state, the cam barrel 9 moves forward together with the knock member 13 through the engagement piece 13c to move the peel pipe 40 of the mechanical pencil shaft 4 forward. By moving the card feed mechanism 43 by operating the card feed is made.

Then, when the rear outer cylinder (2) is rotated, the cam barrel (9) rotates integrally so that the engaging member (6) of the mechanical pencil shaft (4) is dragged from the front engaging surface (10c) of the front cam surface (10). The locking member 10b is moved toward the locking surface 10b, and the engaging member 7 of the bowl pen shaft 5 moves in the opposite direction, and at the same time, the engaging portion 13c of the eraser rubber holder 13a is located at the rear cam surface ( 11 is moved from the cutout portion 11b toward the front end portion 11a, whereby the ball pen shaft 5 protrudes and the mechanical pencil shaft 4 and the cap 13b are retracted together. Will be.

10 to 12, another embodiment is shown. In this embodiment, the cam-rail 100 is installed along the front cam surface 10 of the cam barrel 9, and the mechanical pencil shaft 4 is hooked. The fitting members 6 and the engaging member 7 of the bowl pen shaft 5 are provided with fitting grooves 6a and 7a, respectively, so that these fitting grooves 6a and 7a are symmetrical with the cam rail 100. It slides in place so that it slides easily. Here, the width H ₁ of the front end portion 100a and the rear end portion 100b of the cam rail 100 is formed to be substantially equal to the groove width h ₁ of the fitting grooves 6a and 7a, and the cam rail. The width H ₂ of the inclined portion 100c of the 100 is made smaller than the groove width h ₁ of the fitting grooves 6a and 7a. Therefore, the fitting members 6 and 7 can move the cam rail 100 without changing the direction. In addition, the drive shaft 130 is connected to the rear end of the eraser rubber holder 13a, and the engaging projection 131 is installed on the drive shaft 130, and the engaging projection 131 is rearward of the cam barrel 9. The cam surface 11 is pressed while being brought into contact with each other. Therefore, when the cam barrel 9 is rotated together with the rear outer cylinder 2, the engaging projection 131 is moved along the cam rail 100, and the same operation and effect as in the previous embodiment is obtained.

As described above, according to the present invention, when the rear outer cylinder rotates, the cam barrel that is rotated integrally therewith can alternately protrude and retract the mechanical pencil shaft and the bowl pen shaft, and the mechanical pencil shaft protrudes and the knock member. Because it protrudes from the rear outer tube, the knock member can be knocked out by knocking the knock member. When the knock operation, the hand holding the outer cylinder is not disturbed, so that the knock operation can be performed smoothly. In addition, when used as a ball pen or when carrying a pen, the knock member does not protrude from the outer cylinder, so it becomes a beautiful compound writing device in terms of design.

Claims (1)

The rear outer cylinder 2 is pivotally connected to the rear end of the front outer cylinder 1 so that it can be inserted and pulled out and inserted so that the rear outer cylinder 2 can be slid in the axial direction while rotating the rear outer cylinder 2. In the composite pen mechanism in which the sharp pencil shaft (4) and the ball pen shaft (5) are protruded and retracted alternately, the rear outer cylinder (2) is installed so as to slide in the axial direction while the axial rotation direction is caught. The cam barrel 9, which is caught by being pushed by the rear end of the mechanical pencil shaft 4 and the bowl pen shaft 5, and the knock member 13, which is caught while being pressed by the rear end of the cam barrel 9; When the rear outer cylinder (2) is rotated, the mechanical pencil shaft (4) and the knock member 13 in the cam barrel (9) relative movement in the axial direction and one of them protrudes the other side Only sinks and the pencil axle protrudes. The knock member is protruded at the same time to knock out the composite pen mechanism characterized in that the cardiac discharge of the mechanical pencil shaft (4) is made through the cam barrel (9).

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