JP2008023968A - Retractable writing utensil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a retractable writing utensil which can be carried or used without being conscious of the storage state or the projection state of an auxiliary writing body. <P>SOLUTION: The retractable writing utensil is a double-writing utensil including the auxiliary writing body at the back of the writing utensil body and has the axis of rotation perpendicular to the axis of the writing utensil body in the longitudinal direction. The auxiliary writing body is longitudinally movably arranged to the axis direction and unrotatably engaged with the writing utensil body in the backward movement of the auxiliary writing body and the tip end of the auxiliary writing body is projected further than the rear end of the writing utensil body in the backward movement. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is composed of a writing body such as a sign pen, a fluorescent pen, a water-based / oil-based ballpoint pen, and an eraser such as an eraser, a correction liquid, and a correction tape at the rear end of a writing instrument main body containing one or a plurality of writing bodies This is related to a writing instrument in which a secondary writing instrument is arranged.

Conventionally, a plurality of writing bodies are stored in a shaft cylinder, and a slider connected to the rear part of the writing body is moved back and forth, or by rotating a rear shaft or a clip, the writing body is attached to the shaft cylinder. A multi-core type writing instrument which is caused to appear and disappear from the tip opening is known. As an example of the cursive body, there are a ballpoint pen body such as black, red, and blue, a mechanical pencil unit having a different core diameter, or a mixture of the ballpoint pen body and the mechanical pencil unit.
Moreover, as what is arrange | positioned at the rear-end part of the axial cylinder of the said writing instrument, an eraser is a representative example and there also exists an example which has arrange | positioned correction tape, a highlighter pen, etc. However, these erasers, correction tapes, fluorescent pens, etc. are often used in an auxiliary manner, and the number that can be arranged is limited to one.

There is also known a multi-core writing instrument that causes a writing body to appear and disappear from a tip opening of a shaft cylinder by reversing operation and sliding operation by rotation. One example is a writing instrument described in JP-A-1-184196. Details will be described below. It is composed of a sub-main body having a writing portion called a writing nib (pointed end) protruding from both ends and having a flat shape, and a main body covering the outer periphery of the side surface of the sub-main body. The sub-main body is disposed so as to be rotatable perpendicularly to the main body from the outer peripheral direction of the side surface, but is disposed on a concave portion called a hinge device disposed on the side surface of the sub-main body and a side inner surface portion of the main body. The engagement with a convex portion called an actuator device prevents rotation unless a constant force is applied.
Next, the usage method will be described. During use, that is, during writing, the sub-main body is slid forward relative to the longitudinal direction of the main body by applying a certain force, and the writing body arranged on the sub-body from the front end opening of the main body is used for writing A writing part called a nib (tip) is projected. The forward slide of the sub-main body engages the concave portion and the convex portion formed on each side surface, and the protruding state of the sub-main body is maintained by the engaging action. At this time, since the front end opening of the main body is a through hole, the sub body cannot rotate with respect to the main body, so that the sub body does not rotate carelessly during writing. Yes. In addition, what is necessary is just to perform in the reverse procedure of the said protrusion operation, when it is desired to immerse the writing part of a sub-main body.
JP-A-1-184196.

However, in the above prior art, the sub-main body is locked by engagement of the concave portion and the convex portion so that the sub-main body does not rotate until a certain force is applied when the writing portion is immersed. If a certain level of force is applied in the interior, it may rotate, and there is a risk that clothing or objects will be soiled by the exposed writing part. In order to suppress the rotation of the sub-main body, an attempt has been made to increase the engagement force by the concave portion and the convex portion. However, a large force is required for the rotation operation at the time of use, which is not practical.
The central part of the main body also forms an opening (through hole) formed at the front end opening of the main body, and the rotation is reliably prevented by inserting a writing part into the opening. However, it is necessary to increase the stroke with which the sub-main body slides. As a result, the entire length of the main body is increased, which is not preferable.
At the time of writing, there is the convenience that the writing part appears and disappears only by sliding operation, but depending on the user with high writing pressure, the protruding state may be canceled and it may become immersed, making writing impossible There is a risk of becoming. Thus, it is conceivable to increase the engaging force between the concave portion and the convex portion as described above, but the operating force for the sliding operation also increases, which is not practical.
In order to overcome these problems, the user must always be aware of the stored state of the cursive and the load in writing and pay attention to it.

  The present invention has been made in view of the above-described problems, and is a dual-type writing instrument having a sub-writing instrument at the rear part of the writing instrument body, and the rotation axis line perpendicular to the axis line in the longitudinal direction of the writing instrument body. And is disposed so as to be movable back and forth in the axial direction, and is non-rotatably engaged with the writing instrument body in the retreating operation of the auxiliary writing instrument, and the tip of the auxiliary writing instrument is engaged with the writing instrument body in the retreating operation. The gist is that it protrudes from the rear end.

  The present invention is a dual-type writing instrument having a secondary writing instrument at the rear part of the writing instrument body, the auxiliary writing instrument having a rotation axis perpendicular to the axis in the longitudinal direction of the writing instrument body, and moving back and forth in the axial direction. Since the auxiliary writing instrument is non-rotatably engaged with the auxiliary writing instrument in the backward movement of the auxiliary writing instrument, and the tip of the auxiliary writing instrument is protruded from the rear end of the writing instrument main body in the backward movement, the user can It can be carried and used without being aware of the stored state and protruding state of the cursive.

  The operation will be described. In the backward movement of the auxiliary writing instrument, the auxiliary writing instrument and the writing instrument main body are engaged with each other in a non-rotatable manner, thereby preventing malfunctions such as unnecessary rotation and sliding of the auxiliary writing instrument during writing or carrying.

An example of an embodiment of the present invention will be described with reference to FIGS. The present embodiment is composed of a main writing tool 1 and a sub-writing tool 2. A holder 5 is fixed behind the main writing instrument 1 composed of the front shaft 3 and the rear shaft 4. The auxiliary writing instrument 2 is attached to the holder 5 so as to be rotatable and slidable. The auxiliary writing instrument 2 has a rotating cylinder 6 at the center of rotation, and on one side of the rotating cylinder 6 is a pen tip 7, a case 8 to which the pen tip 7 is attached, and an ink disposed in the case. And a fluorescent pen cartridge 11 comprising a sealing plug 10 at the rear end opening of the case 8 is detachably fitted, and an eraser 12 is detachably fitted on the other side. It is. Since the fluorescent pen cartridge 11 has the same structure as a general fluorescent pen, details such as the arrangement of parts are omitted.
A planar detent 8a is formed on the outer peripheral surface of the case 8 of the fluorescent pen cartridge 11 at a position facing it. The rotation stopper 8a engages with a flat portion or a convex portion formed on the inner surface of the rotary cylinder 6 so as to be positioned with respect to the rotary cylinder 6 and prevents relative rotation. Further, a concave portion 8 b is formed on the outer peripheral surface of the case 8, and the concave portion 8 b is engaged with a convex portion formed on the inner surface of the rotating cylinder 6. That is, when the concave portion 8 b of the case 8 is engaged with the convex portion of the rotating cylinder 6, the fluorescent pen cartridge 11 is detachably fixed to the rotating cylinder 6. The cap 13 is formed with an airtight portion 13a formed of a convex portion formed in a circumferential shape and a partially formed patchon fitting rib 13b. It is in contact with the circumference and fitted with the fitting protrusion 6c. And the said nib 7 is sealed by these, a circumferential contact, and patchon fitting, and drying is prevented. The cap 14 is also detachably attached to the eraser 12 on the other side, but is intended to prevent the eraser 12 from being soiled when not in use. Is attached.

Next, a method for attaching the auxiliary writing instrument 2 to the holder 5 will be described. Although the clip 5d is integrally formed on the outer surface of the holder 5, it may be formed as a separate member and fixed. The holder 5 is integrally formed with a connecting cylinder part 5e connected to the rear shaft 4 of the main writing instrument 1 and a rear part of the connecting cylinder part 5e, one of which is a pair of holder pieces 5f positioned as an extension of the clip 5d. It consists of and. A through hole is formed above the holder piece 5f. The through hole is formed at the rear of the long hole 5a and the long hole 5a, and has a rotation hole 5c having a diameter larger than the width of the long hole 5a. It is composed of
On the other hand, a convex rotation shaft 6a is formed at the outer peripheral surface of the rotary cylinder 6 at substantially the center, and the rotation shaft 6a is a plane parallel to the axial direction in the longitudinal direction of the auxiliary writing instrument 2. A cylindrical detent 6b is formed. The rotating shaft 6a on which the planar detent 6b is formed is fitted in the long hole 5a or the rotating hole 5c of the holder piece 5f. When the rotary shaft 6a is positioned in the long hole 5a, the rotary cylinder 6 is not rotatable relative to the holder 5, and when the rotary shaft 6a is positioned in the rotary hole 5c, the holder 5 is not rotated. It can rotate.
In addition, a retaining rib 5b is formed substantially at the center of the long hole 5a. The retaining rib 5b is formed to have a width slightly smaller than that of the rotation stopper 6b, and if the force beyond a certain level is not applied, that is, the rotation cylinder 6 does not get over the retaining rib 5b. It cannot move to the rotation hole 5c.
Further, reduced diameter portions 13c and 14a are formed at the tops of the cap 13 of the fluorescent pen cartridge 11 and the cap 14 of the eraser 12, and the reduced diameter portions 13c and 14a have the same outer diameter. The reduced diameter portions 13c and 14a can be inserted and fitted into the inner diameter portion 5g of the connecting cylinder portion 5e of the holder 5, but there are some gaps (for example, 0 to 0.1 mm). It is also possible to provide a range). The play of the subscript 2 with respect to the holder 5 is suppressed as much as possible.
In this example, the elongated hole 5a is formed in the holder piece 5f of the holder 5, and the convex rotating shaft 6a that engages with the elongated hole 5a is formed in the rotating cylinder 6. However, the present invention is limited to this. For example, a long hole may be formed in the rotary cylinder 6 and a convex rotation shaft that engages with the long hole may be formed in the holder piece 5 f of the holder 5.

The rear shaft 4 is press-fitted and fixed to the connecting cylinder portion 5e in front of the holder 5, but it may be fixed by means such as screw screwing, bonding, patch fitting, etc., and it must be detached when in use or dropped. The fixing method does not matter. Further, a rotor 15 is rotatably mounted on the inner surface of the rear shaft 4, but the rotation beyond 360 ° cannot be performed by the protrusion 15a. Two sliders (slider 16 and slider 17) are arranged in front of the rotor 15, and the two sliders 16 and 17 are arranged in the longitudinal direction of the rotor 14. It is arranged to be slidable with respect to the axis in the direction. A ball-point pen refill 18 and a mechanical pencil 19 are integrally mounted on the inner diameter of the front end of each of the sliders 16 and 17 in a light press-fit state, and are always rearward by springs 20 and 21 such as coil springs. Is being energized. Further, the front shaft 3 is fixed in front of the rotor 15 by means such as screwing.
Then, by rotating the rear shaft 4 and the front shaft 3 relative to each other, the rotor 15 rotates, and the rotation of the rotor causes the slider 16 (17) to move back and forth. The tip of the ballpoint pen refill 18 and the mechanical pencil 19 appear and disappear from the front shaft 3 by the back and forth movement of (17).

Next, a method of using the auxiliary writing instrument 2 and its operation will be described. The auxiliary writing instrument 2 cannot be rotated by the long hole 5 a of the holder 5 and the rotation stopper 6 b of the auxiliary writing instrument 2, and is prevented from moving backward by the retaining rib 5 b of the holder 5. That is, the auxiliary writing instrument 2 is in a state where it cannot move to the rotation hole 5c.
Here, when a certain force is applied to the auxiliary writing instrument 2 in the rearward direction, the rotation stopper 6b of the rotary cylinder 6 gets over the retaining rib 5b of the holder 5 and reaches the rotation hole 5c. At this time, if the force to get over is larger than the patching fitting force of the cap 13, the cap 13 is removed first. Therefore, in this example, the patchon fitting force between the cap 13 and the fitting projection 6b of the rotary cylinder 6 is set slightly stronger than the force overcoming the above.
When the rotation shaft 6a of the auxiliary writing instrument 2 reaches the rotation hole 5c of the holder 5, the clip 5d can be rotated in the left-right direction with the clip 5d side as the upper side (see FIG. 3). Here, when the auxiliary writing instrument 2 is inverted by 180 °, the eraser 12 is exposed and preparation for use is made. Next, the rotated secondary writing instrument 2 is moved in the direction of the main writing instrument 1. At this time, the rotation stopper 6 b again gets over the retaining rib 5 b of the elongated hole 5 a of the holder 5, and the cap 13 is shrunk. The diameter portion 13 c is inserted and fitted into the inner diameter portion 5 g of the connecting tube portion 5 e of the rotating tube 5. Thereby, the secondary writing instrument 2 cannot be rotated with respect to the holder 5. Next, when the cap 14 of the eraser 12 is removed, the eraser 12 can be used.

  In the present embodiment, the caps 13 and 14 are attached to the respective writing bodies of the auxiliary writing instrument 2, but the leading end of the writing body is fitted to the inner diameter part 5g of the connecting cylinder part 5e of the holder 5 so as to be sealed. good. In addition, the combination of the sub-scripts in this embodiment is a fluorescent pen and an eraser that need to be sealed, but may be a combination of an oil-based ballpoint pen 22 and an eraser that does not need to be sealed (see FIG. 6). , Correction fluid, correction tape, etc. can be appropriately selected according to the application.

It is a 1st Example cutting | disconnection perspective view at the time of the subscript body accommodation of the retractable type writing instrument of this invention. It is sectional drawing of the 1st Example at the time of the subscript body accommodation of the retractable writing instrument of FIG. (A) shows right side sectional drawing when the clip side is the front. (B) shows the back cross section when the clip side is the front. It is a 1st Example cutting | disconnection perspective view at the time of the subwriting body rotation of the retractable writing instrument of FIG. It is sectional drawing of the 1st Example at the time of the subwriting body rotation of the retractable writing instrument of FIG. (A) shows right side sectional drawing when the clip side is the front. (B) shows the back cross section when the clip side is the front. It is a disassembled perspective view of the retractable writing instrument of FIG. It is a 2nd Example cutting | disconnection perspective view at the time of the subsidiary writing body accommodation of the retractable writing instrument of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main cursive body 2 Secondary cursive body 3 Front shaft 4 Rear shaft 5 Holder 5a Long hole 5b Retaining prevention rib 5c Rotating hole 5d Clip 5e Connection cylinder part 5f Holder piece 5g Inner diameter part 6 Rotating cylinder 6a Rotating shaft 6b Rotation stopper 6c Fitting Protrusion 7 Pen tip 8 Case 8a Non-rotating 8b Recess 9 Filling 10 Filler 11 Tail plug 11 Highlighter pen cartridge 12 Eraser 13 Cap 13a Air tight part 13b Patchon fitting rib 13c Reduced diameter part 14 Cap 14a Reduced diameter part 15 Rotor 15a Protrusion 16 Slide Moving element 17 Slider 18 Ball-point pen refill 19 Mechanical pencil 20 Spring 21 Spring 22 Oil-based ballpoint pen

Claims (5)

A dual-type writing instrument having a secondary writing instrument at the rear part of the writing instrument body, wherein the auxiliary writing instrument has a rotational axis perpendicular to the axis in the longitudinal direction of the writing instrument body and is arranged to be movable back and forth in the axial direction. In addition, the writing instrument is configured to be non-rotatably engaged with the writing instrument body during the retreating operation of the sub-writing instrument, and the leading end of the sub-writing instrument protrudes beyond the rear end of the writing instrument body during the retreating operation. A long hole or protrusion formed in the axial direction is formed in the rear part of the writing instrument body, while a long hole or protrusion that engages with the protrusion or a long hole is formed in the auxiliary writing instrument. The compound writing instrument according to claim 1. The compound writing instrument according to claim 1, wherein a fitting hole into which the auxiliary writing instrument is fitted is provided at a rear portion of the writing instrument main body. 4. A writing instrument different from the writing instrument of the writing instrument main body is arranged on one of the sub-writing instruments, and an erasing tool is arranged on the other facing the writing instrument. The double writing instrument described. While arranging a plurality of different writing bodies inside the writing instrument body, the writing instrument body is composed of a front shaft and a rear shaft, and by rotating the front shaft and the rear shaft relatively, the plurality of writing bodies are The dual writing instrument according to any one of claims 1 to 4, wherein the writing instrument is alternately infested.

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