JP6760778B2 - Writing implements - Google Patents

Description

The present invention relates to a writing instrument including a barrel body and a cursive housed in the barrel body.

Conventionally, Patent Document 1 is known as a writing instrument in which a part or the whole of a shaft cylinder is made of a highly transparent material so that the structure inside the shaft cylinder and the decorative portion can be seen through from the outside.

In Patent Document 1, a decorative portion is provided by applying figures, characters, etc. on the surface of the first tubular body by printing or the like, and the decorative portion is provided and housed in the transparent second tubular body for long-term use. Also discloses a writing instrument capable of preventing the surface of the first tubular body and the printing surface of characters and the like from being worn. Further, regarding a writing tool in which such a decorative portion is provided in a shaft cylinder to protect the decorative portion from wear and the like, the applicant of the present application also referred to Patent Document 2 in Patent Document 2 inside the outer shaft formed transparently or colored transparently. A writing tool is disclosed in which an inner shaft is arranged and a decorated heat-shrinkable film is detachably covered on the inner shaft so that the decorated heat-shrinkable film can be easily replaced.

However, when a part of the shaft cylinder or the entire shaft cylinder is formed of a highly transparent material to provide a transparent portion, the rotation position or clip of the decorative portion provided on the internal component and the window portion provided on the shaft cylinder. There is a problem that it is difficult to match the rotation position of the outer peripheral part of the shaft cylinder such as printing and printing, and by using a highly transparent material for the shaft cylinder, a part that you do not want to see in appearance (for example, screw fitting) There was a problem that even parts (parts, uneven fitting parts, etc.) could be seen from the outside.

Registered Utility Model No. 3172555 Japanese Patent No. 4625668

The present invention has been invented in view of the above problems, and the rotational position of the decorative portion can be easily adjusted with respect to the barrel main body, and the barrel main body can be seen through. It is to provide a writing instrument which has a small influence on the appearance even if a part has transparency.

The present invention
"1. A writing instrument provided with a shaft cylinder body and a cursive body housed in the shaft cylinder body.
The axle cylinder body includes a front shaft, an intermediate shaft connected to the rear end portion of the front shaft, and a rear shaft connected to the rear end portion of the intermediate shaft.
A transparent portion in which the inside can be visually recognized between the front shaft connecting portion in which the intermediate shaft is connected to the front shaft, the rear shaft connecting portion connected to the rear shaft, and the front shaft connecting portion and the rear shaft connecting portion. And have
In the front shaft, the front shaft connecting portion of the intermediate shaft is connected,
The rear axle connecting portion of the intermediate shaft is detachably connected in the rear axle.
At least the connecting portion of the front shaft with the intermediate shaft and the connecting portion of the rear shaft with the intermediate shaft are composed of an opaque portion in which the inside cannot be seen.
A tubular body that is non-rotatably attached to any one of the intermediate shaft, the front shaft, and the rear shaft is arranged inside the intermediate shaft.
A writing instrument characterized in that the tubular body can be visually recognized through a transmissive portion of the intermediate shaft.
2. 2. A convex or concave locking portion is provided on the inner surface of the rear shaft or the front shaft, and a concave or convex locked portion is provided on the outer surface of the tubular body of the rear shaft or the front shaft. The first item is characterized in that the tubular body is non-rotatably mounted on the rear shaft or the front shaft by locking the locking portion to the locked portion of the tubular body. The writing tool of the description.
3. 3. A hooking portion is provided at the connecting portion of the intermediate shaft, a hooking portion is provided on the tubular body, and the hooking portion of the intermediate shaft is hooked on the hooked portion of the tubular body. The writing tool according to the above item 1, wherein the tubular body is non-rotatably attached to the intermediate shaft.
4. The item according to any one of the above items 1 to 3, wherein the tubular body is detachably attached to any one of the front shaft, the intermediate shaft, and the rear shaft. Writing utensils. ".

In the present invention, at least the connecting portion of the front shaft with the intermediate shaft and the connecting portion of the rear shaft with the intermediate shaft are composed of an invisible opaque portion, so that the intermediate shaft is visually invisible. The connection between the front axle and the rear axle is not visible and the appearance is not spoiled. Further, since the tubular body is housed in the intermediate shaft, the decorative portion of the tubular body does not come into contact with other belongings during carrying, and it is possible to prevent the appearance from being deteriorated due to the wear of the decorative portion. ..
The material used for the intermediate shaft may be a colorless and transparent material as long as the inside can be seen through, or a colored transparent material may be used. Further, as the material of the intermediate shaft, polycarbonate, ABS resin or the like can be used with an emphasis on transparency.
Further, the opaque portion provided on the front shaft and the rear shaft is a resin material such as polycarbonate or ABS resin as long as the inside is invisible by printing or painting the surface of the pre-colored resin material or the connecting portion. And metal parts can be used.

Further, in the present invention, since the tubular body is formed separately from the axle cylinder main body composed of the front shaft, the intermediate shaft, and the rear shaft, the axle cylinder main body has a complicated shape with an emphasis on design. , The tubular body can be made into a shape that is easy to decorate by printing, painting, etc., and it is possible to achieve both the decoration inside the writing instrument and the exterior design.

When the tubular body is non-rotatably mounted on the front shaft or the rear shaft, the locked portion provided on the tubular body is non-rotatably mounted on the locking portion provided on the front shaft or the rear shaft. If possible, the shape and form are not limited, but when mounting the tubular body in the front shaft or the rear shaft, on the inner surface of the front shaft or the rear shaft, from the rear end of the front shaft or the front end of the rear shaft to the axis. By mounting the tubular body so as to project in the direction along the line, the tubular body protruding from the front shaft or the rear shaft serves as a guide when connecting the intermediate shaft to the front shaft or the rear shaft, which is preferable.
Further, the tubular body protruding from the rear end of the front shaft or the front end of the rear shaft along the axis is long so that the intermediate shaft is guided and does not tilt when the intermediate shaft is connected to the front shaft or the rear shaft. It is more preferable to set it to.
Further, since the tubular body is non-rotatably locked to the front shaft or the rear shaft, the decorative portion can be mounted by aligning the rotation position with the outer shape of the front shaft or the rear shaft.

Further, when the tubular body is mounted non-rotatably with respect to the intermediate shaft, the shape and form of the hooked portion of the tubular body can be mounted non-rotatably with respect to the hooking portion provided on the intermediate shaft. However, it is preferable that the connecting portion between the hooked portion and the hooked portion is not visible from the outside so that the decorative portion can be seen clearly when the tubular body is viewed through from the intermediate shaft. Specifically, the hooked portion provided on the tubular body is provided at a position corresponding to the opaque portion of the front shaft connecting portion and the rear shaft connecting portion of the tubular body so as not to be seen from the intermediate shaft, and the intermediate shaft is hooked. The stop portion may be provided at the rear end or inner surface of the connecting portion hidden by the rear shaft or the front shaft.
At this time, since the tubular body is non-rotatably hooked to the intermediate shaft, the rotation position of the decorative portion is set to the outer shape of the intermediate shaft or the outer shape of the front shaft or the rear shaft connected to the middle shaft. It can also be mounted on the intermediate shaft.

In addition, by detachably attaching a tubular body to the front shaft, intermediate shaft, or rear shaft, the specifications for decorating the writing instrument and the specifications for not decorating the writing instrument can be changed without changing the component configuration other than the tubular body. Can be done.
Further, since the tubular body is detachably attached to the shaft cylinder body, the tubular body provided with the decorative portion can be easily replaced by removing the screwing between the intermediate shaft and the rear shaft.

In this case, the non-rotatable state includes the rotation of the gap between the parts generated by the dimensional tolerances of the front shaft, the intermediate shaft, the rear shaft and the tubular body, and the individual parts are damaged. It shall indicate a state in which it does not rotate with normal force without it.

According to the present invention, the rotation position of the decorative portion can be easily adjusted with respect to the barrel main body, and even if a part of the barrel main body has transparency in order to see through the decorative portion, the appearance is given. I was able to obtain a writing instrument with little influence.

It is a side view of the writing instrument of the first form. It is a vertical sectional view of the writing instrument of FIG. It is an enlarged cross-sectional view which omitted a part of the front shaft and the grip in FIG. It is an enlarged cross-sectional view which omitted a part of the intermediate axis in FIG. It is an enlarged side view of the tubular body in FIG. It is an enlarged cross-sectional view which omitted a part of the rear shaft in FIG. FIG. 5 is an enlarged cross-sectional view taken along the line AA of FIG. It is explanatory drawing which shows the connection state of the intermediate shaft and the rear shaft. It is a vertical sectional view of the writing instrument of the second form. 9 is an enlarged cross-sectional view in which a part of the intermediate shaft in FIG. 9 is omitted. 9 is an enlarged side view of the tubular body in FIG. 9. 9 is an enlarged cross-sectional view taken along the line BB of FIG.

Next, an embodiment of the writing instrument of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments. The side of the cursive with the writing part is expressed as the front, and the opposite is expressed as the rear. Further, the side of the barrel body near the axis is expressed as the inner side, and the opposite side is expressed as the outer side.

As shown in FIGS. 1 to 8, the writing instrument 1 of the first embodiment (Example 1) constitutes the axle cylinder main body 20 from the front shaft 2, the intermediate shaft 3, and the rear shaft 4. In the rear end portion of the front axle 2, the front axle connecting portion 3A of the intermediate shaft 3 is connected by over-fitting. Further, a male screw portion 3D is provided on the rear shaft connecting portion 3E of the intermediate shaft 3, and is screwed to a female screw portion 4A provided on the inner surface of the front end portion of the rear shaft 4. Further, the writing instrument 1 includes an opaque grip 5 (impermeable portion) that surrounds the outer surface of the front shaft 2 in the circumferential direction, and a cursive body 6 housed in the shaft cylinder main body 20 so as to appear and disappear. The front shaft 2, the intermediate shaft 3, and the rear shaft 4 are made of resin, and the grip 5 is made of rubber. In the illustrated example, the writing instrument 1 is a ballpoint pen.

The front shaft 2 is formed with an opening 2A at the front end from which the writing portion (ballpoint pen tip) 7 of the cursive body 6 can protrude. Further, the cursive 6 is urged and arranged rearward in the axial direction (right side in FIG. 2) of the barrel body by a coil spring 8 arranged in the front shaft 2.

The infestation mechanism is provided with a cam mechanism having a rotary cam 9 for switching the appearance of the writing portion 7 of the cursive body 6 and a cam groove 4D (see FIG. 6) that engages with the rotary cam 9 in the rear shaft 4. There is. When the knock member 10 is pressed (knocked) while the writing portion 7 of the cursive 6 is immersed in the front shaft 2 (see FIG. 2), the rotating cam 9 slides along the cam groove 4D. The cursive 7 of the cursive 6 projects forward from the opening 2A of the front shaft 2, and the rotating cam 9 is rotated by the action of the cam mechanism, so that the cursive body 20 is axially rearward. The relative movement of No. 6 is prohibited, and this protruding state is maintained even after the pressing operation is completed. When the knock member 10 is pressed (knocked) again in this protruding state, the action of the cam mechanism allows the cursive body 6 to move backward in the axial direction of the barrel body 20, and the coil spring 8 The cursive body 6 and the knock member 10 are pushed back in the axial direction by the urging force to restore the initial state.

To describe the cursive 6 in detail, a writing portion 7 made of a ballpoint pen tip that rotatably holds a ball having a diameter of 0.5 mm is attached to the front end portion of the ink containing cylinder 11. Also within the ink accommodating tube 11, although not shown, in the environment of 20 ° C. using TA Instruments Co., Ltd. AR-G2 (the stainless steel 40 mm ^2), the shear rate 5 sec ^{- The} black oil-based ballpoint pen ink having an ink viscosity of 15,000 mPa · s measured in ¹ is directly stored.

Further, as shown in FIG. 3, two protrusions 2B (2BA, 2BB) protruding inward in a circumferential shape are provided at different positions in the longitudinal direction on the rear inner surface of the front shaft 2. Further, as shown in FIG. 4, on the outer surface of the front shaft connecting portion 3A of the intermediate shaft 3, the protrusion 3B corresponding to the protrusions 2BA and 2BB of the front shaft 2 and protruding outward in a circumferential shape. 2 (3BA, 3BB) are provided at different positions in the longitudinal direction, and the front shaft 2 and the intermediate shaft 3 are the protrusions 2BA, 2BB and the intermediate shaft 3 provided on the inner surface of the rear end portion of the front shaft 2. The protrusions 3BA and 3BB provided on the outer surface of the front axle connecting portion 3A are connected by passing over and engaging with each other.

Behind the protrusions 2B of the front shaft 2, recessed grooves 2C extending in the longitudinal direction are provided at eight uniform positions in the circumferential direction. Further, behind the protrusion 3B of the intermediate shaft 3, protrusions 3C extending in the longitudinal direction are provided at four uniform positions in the circumferential direction. When the front shaft 2 and the intermediate shaft 3 get over and engage with each other, the concave groove 2C of the front shaft 2 and the protrusion 3C of the intermediate shaft 3 engage with each other, and the front shaft 2 and the intermediate shaft 3 are non-rotatably connected.
The intermediate shaft 3 is made of a transparent resin material, and a transparent portion 3F for seeing through the inside is formed in the intermediate portion of the intermediate shaft 3. Further, since the outer surface of the front shaft 2 is covered with the opaque grip 5 (impermeable portion) as described above, the front shaft connecting portion 3A of the intermediate shaft 3 is configured so as not to be seen through from the outside. It does not spoil the appearance.

Further, the intermediate shaft 3 and the rear shaft 4 are detachably screwed with a male screw portion 3D provided on the outer surface of the rear portion of the intermediate shaft 3 and a female screw portion 4A provided on the inner surface of the front portion of the rear shaft 4. .. A clip 12 is attached to the rear portion of the rear shaft 4. (See Fig. 2)
Since the rear shaft 4 is molded of an impermeable resin material, the rear shaft connecting portion 3E, which is the screw engaging portion between the intermediate shaft 3 and the rear shaft 4, is externally formed by the rear shaft 4 (impermeable portion). It is configured so that it cannot be seen through, and does not spoil the appearance.

Next, as shown in FIGS. 2, 5, 6, 7, and 8, a tubular body 13 formed in a tubular shape is detachably attached to the inside of the intermediate shaft 3. The tubular body 13 is provided with two locked portions 13A protruding outward from the flange portion 13D at positions facing each other with the axial center in between, and the collar portion 13D is provided in the circumferential direction. Claw portions 13B formed in a stepped manner are provided at four equal locations. Further, two concave locking portions 4B are formed on the inner surface of the rear shaft 4 at positions facing each other with the axis center in between, and further, on the inner surface of the rear shaft 4, an even 4 in the circumferential direction is formed. A bulging portion 4C protruding inward is provided at one place.
Here, the tubular body 13 and the rear shaft 4 are non-rotatably attached by inserting the locked portion 13A of the tubular body 13 into the locking portion 4B of the rear shaft 4, and further, the tubular body 13 is mounted in a tubular shape. The rear shaft 4 and the tubular body 13 are locked by fitting the claw portion 13B of the body 13 over the bulging portion 4C of the rear shaft 4. Therefore, the rotational positions of the tubular body 13 and the rear shaft 4 are mounted in a predetermined state with respect to the locked portion 13A and the locking portion 4B.
The over-fitting between the claw portion 13B of the tubular body 13 and the bulging portion 4C of the rear shaft 4 is set to be weak, and the overcoming fitting is made by pulling the tubular body 13 forward with respect to the rear shaft 4. Is released, and the tubular body 13 is configured to be detached from the rear shaft 4.

More specifically about the tubular body 13, as shown in FIG. 5, a decorative portion 13C (XYZ in FIG. 5) is provided on the side surface of the tubular body 13, and the decorative portion 13C is printed, transferred, and painted. , It is possible to decorate by sticking a sticker, engraving, molding, etc. In the first embodiment, the decoration portion 13C is decorated by printing to improve its appearance. When decorating the decoration portion 13C, the locked portion 13A of the tubular body 13 is used as a mark to align the rotation position and print, so that the appearance rotation position of the decoration portion 13C and the rear shaft 4 can be obtained. Can be matched. Further, the decorative portion 13C can be seen through from the transmission portion 3F of the intermediate shaft 3.

Here, with reference to FIGS. 8 (A, B, C), an assembly operation when the tubular body 13 is attached to the rear shaft 4 and the intermediate shaft 3 and the rear shaft 4 are screwed together will be described.
As shown in FIG. 8A, the locked portion 13A of the tubular body 13 is aligned with the locking portion 4B formed on the inner surface of the rear shaft 4 and inserted from the rear portion, and the claw portion on the outer peripheral portion of the tubular body is inserted. It is attached by fitting 13B over the bulging portion 4C. Further, as shown in FIG. 8 (B), the male screw portion 3D of the intermediate shaft 3 is inserted into the decorative portion 13C of the tubular body 13 projecting forward from the rear shaft 4, and the intermediate shaft 13 is used as a guide in the middle. The shaft 3 is pushed backward (in the direction of the arrow in FIG. 8), the male screw portion 3D of the intermediate shaft 3 is guided to the female screw portion 4A of the rear shaft 4, and the male screw portion 3D is screwed into the female screw portion 4A to the intermediate shaft 3 and the rear. Connect with the shaft 4.
At this time, since the internal locking portion 4B is formed according to the rotation position of the clip 12 mounted on the rear shaft 4, the printed characters of the decorative portion 13C of the tubular body 13 are aligned with the rotation position of the clip 12. It is attached and the state shown in FIG. 8C is obtained.
Further, since the length of the decorative portion 13C of the tubular body 13 is formed longer than the length of the male screw portion 3D of the intermediate shaft 3, the decorative portion 13 is decorated when the intermediate shaft 3 is screwed into the rear shaft 4. It can be firmly supported by the portion 13C, and it is possible to prevent work mistakes such as dropping the intermediate shaft 3 when connecting.

Here, in order to replace the writing body 6, for example, by grasping the front shaft 2 and the rear shaft 4 and applying rotation to the opposite side where the intermediate shaft 3 and the rear shaft 4 are screwed together, the front shaft 2 and the intermediate shaft 6 are exchanged. Since the shaft 3 prevents rotation, the screwing between the intermediate shaft 3 and the rear shaft 4 can be removed, and as a result, the writing body 6 can be removed and replaced from the rear end of the intermediate shaft 3.
Further, at this time, since the tubular body 13 is in a state of protruding forward from the rear shaft, by pulling the tubular body 13 forward, the bulging portion 4C of the rear shaft 4 becomes the claw of the tubular body 13. The over-the-top fitting with the portion 13B is released, and the tubular body 13 can be removed from the rear shaft 4.
Therefore, the decoration inside the shaft cylinder body 20 can be freely changed by exchanging the tubular body 13, and the specifications without decoration can be easily changed.

Further, a resin material known as a shaft cylinder of a writing tool such as polypropylene, polycarbonate, acrylonitrile styrene, or polyethylene terephthalate can be appropriately selected and used for the shaft cylinder main body 20 described above. Specifically, polycarbonate and ABS resin are preferable for the intermediate shaft 3 in consideration of visibility inside the axle cylinder body 20, and the front shaft 2 has a grip 5 mountability and the front shaft 2 Polycarbonate and acrylonitrile styrene are preferable in view of the intermediate shaft 3 crossing over and engaging, and the rear shaft 4 is made of polycarbonate and acrylic in view of decorativeness such as printing and sticking of a seal and slidability of the appearance mechanism. It is preferably nitrile styrene.

Next, a second embodiment (Example 2) of the present embodiment will be described with reference to FIGS. 9 to 12. The same part as in Example 1 will be omitted.
As shown in FIGS. 9 to 12, in the writing instrument 100 of the second embodiment, a tubular body 113 formed in a tubular shape is detachably attached to the inside of the intermediate shaft 103. At the rear portion of the tubular body 113, hooked portions 113A are provided at four points evenly in the circumferential direction, and the hooked portion 113A is provided with convex portions 113B protruding outward. .. Further, at the rear end of the rear shaft connecting portion 103E of the intermediate shaft 103, hooking portions 103G are provided at four uniform positions in the circumferential direction, and the hooking portion 103G is provided with recesses 103H formed in a concave shape. is there.
Here, the intermediate shaft 103 and the tubular body 113 are hooked by inserting the convex portion 113B of the tubular body 113 into the concave portion 103H of the intermediate shaft 103. Further, the fitting force between the convex portion 113B of the tubular body 113 and the concave portion 103H of the intermediate shaft 103 is set to be weak, and the hook is released by pulling the tubular body 113 rearward with respect to the intermediate shaft 103. , The tubular body 113 is configured to be detached from the intermediate shaft 103.

More specifically, as shown in FIG. 11, the tubular body 113 is provided with a decorative portion 113C (XYZ in FIG. 11) on the side surface of the tubular body 113, and the decorative portion 113C is printed, transferred, and painted. , It is possible to decorate by sticking a sticker, engraving, molding, etc. In the second embodiment, the appearance is improved by decorating the decoration portion 113C by transfer. When decorating the decoration portion 113C, the rotation positions of the decoration portion 113C and the intermediate shaft 103 can be aligned by aligning the rotation positions with the hooked portion 113A of the tubular body 113 as a mark. it can.
Further, since the tubular body 113 can be removed from the intermediate shaft 103 by removing the screw between the male screw portion 103D of the intermediate shaft 103 and the female screw portion 104A of the rear shaft 104, the tubular body 113 can be decorated separately. It is possible to replace it with a given tubular body, or leave it removed and leave it undecorated.

Since the intermediate shaft 103 is formed of a permeable resin material and the transparent portion 103F for seeing through the inside is formed in the intermediate portion of the intermediate shaft 103, the tubular body 13 is formed through the transparent portion 103F. The decorative portion 113 of the above is configured to be transparent.
Further, the rear shaft 104 is formed of an impermeable resin material, and the connecting portion 114 between the hooked portion 113A of the tubular body 113 and the hooking portion 103G of the intermediate shaft 103 is located inside the rear shaft 104. (See FIG. 9), the connecting portion 114 between the intermediate shaft 103 and the tubular body 113 cannot be visually recognized from the outside through the transmitting portion 103F, and the appearance is not impaired.

The writing instrument of the present invention is not limited to the type of ink and the pen tip, and can be widely implemented as a writing instrument.

1 Writing tool 2 Front shaft 2A Opening 2B Protrusion 2C Concave groove 3 Intermediate shaft 3A Front shaft connection 3B Protrusion 3C Protrusion 3D Male thread 3E Rear shaft connection 3F Transmission 4 Rear shaft 4A Female screw 4B Locking part 4C Exit 4D Cam groove 5 Grip 6 Writing body 7 Writing part 8 Coil spring 9 Rotating cam 10 Knock member 11 Ink storage cylinder 12 Clip 13 Cylindrical body 13A Locked part 13B Claw part 13C Decorative part 13D flange part 20 Shaft cylinder Main body 100 Writing tool 103 Intermediate shaft 103D Male threaded part 103E Rear connecting part 103F Transmission part 103G Hooking part 103H Recessed part 104 Rear shaft 104A Female threaded part 113 Cylindrical body 113A Hooked part 113B Convex part 113C Decorative part 114 Connecting part

Claims (2)

A writing instrument including a shaft cylinder body and a cursive body housed in the shaft cylinder body.
The axle cylinder body includes a front shaft, an intermediate shaft connected to the rear end portion of the front shaft, and a rear shaft connected to the rear end portion of the intermediate shaft.
A transparent portion in which the inside can be visually recognized between the front shaft connecting portion in which the intermediate shaft is connected to the front shaft, the rear shaft connecting portion connected to the rear shaft, and the front shaft connecting portion and the rear shaft connecting portion. And have
In the front shaft, the front shaft connecting portion of the intermediate shaft is connected,
The rear axle connecting portion of the intermediate shaft is detachably connected in the rear axle.
At least the connecting portion of the front shaft with the intermediate shaft and the connecting portion of the rear shaft with the intermediate shaft are composed of an opaque portion in which the inside cannot be seen.
A tubular body is arranged inside the intermediate shaft,
A convex or concave locking portion is provided on the inner surface of the rear shaft or the front shaft, and a concave or convex locked portion is provided on the outer surface of the tubular body of the rear shaft or the front shaft. By locking the locking portion to the locked portion of the tubular body, the tubular body is non-rotatably mounted on the rear shaft or the front shaft.
A writing instrument characterized in that the tubular body can be visually recognized through a transmissive portion of the intermediate shaft. The writing instrument according to claim 1, wherein the tubular body is detachably attached to the front shaft or the rear shaft.

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