JP2010162753A - Writing utensil - Google Patents

Abstract

[PROBLEMS] To provide a writing instrument capable of adjusting a pen tip protruding length from a front end of a shaft tube and having no fear of damaging the appearance of the shaft tube even after adjusting a pen tip protruding length from a front end of the shaft tube. .
A plurality of writing bodies 5 are accommodated in a shaft cylinder 2 in a replaceable manner. The pen nibs 51 of the respective writing bodies 5 are selectively projected and retracted outside through the front end holes 31 of the shaft cylinder 2. The operating body 6 is screwed to the rear end of each writing body 5. The rear end of the operating body 6 that is screwed to the writing body 5 when the pen tip protrudes is brought into contact with the support portion 42 on the inner surface of the shaft tube 2. By rotating the writing body 5 and the operation body 6 relative to each other, the distance between the rear end of the operation body 6 and the front end of the pen tip 51 is made variable.
[Selection] Figure 2

Description

The present invention relates to a writing instrument. Specifically, the present invention relates to a writing instrument in which a writing body is accommodated in a shaft cylinder, and a pen tip of the writing body is projected to the outside through a front end hole of the shaft cylinder.

Patent Document 1 describes a multi-core writing instrument in which a shaft cylinder includes a front shaft and a rear shaft, and the front shaft and the rear shaft are screwed together so as to be detachably connected.

JP-A-6-316195

The conventional writing instrument can be adjusted on the outer surface of the shaft cylinder between the front shaft and the rear shaft even though the pen tip length from the front end of the shaft tube can be adjusted by loosening the screwing between the front shaft and the rear shaft. An annular gap is formed, and the appearance may be impaired.

The present invention solves the above-described conventional problems, and is capable of adjusting the pen tip length from the front end of the shaft tube and also adjusting the pen tip length from the front end of the shaft tube. An object of the present invention is to provide a writing instrument that does not impair the appearance of the cylinder. In the present invention, “front” refers to the pen tip side, and “rear” refers to the opposite side.

1st invention of this application is the writing instrument which accommodated the writing body 5 in the axial cylinder 2 so that replacement | exchange was possible, and made the pen point 51 of the said writing body 5 protrude outside through the front-end hole 31 of the said axial cylinder 2. The operating body 6 is screwed to the rear end of the writing body 5, and the rear end of the operating body 6 screwed to the writing body 5 when the pen tip protrudes is brought into contact with the support portion 42 on the inner surface of the shaft cylinder 2. And the distance between the rear end of the operating body 6 and the front end of the pen point 51 is variable.

In the writing instrument 1 of the first invention, the distance between the rear end of the operating body 6 and the front end of the pen point 51 is variable by rotating the writing body 5 and the operating body 6 relative to each other. The pen tip length from the front end of the tube 2 can be easily adjusted. Furthermore, the writing instrument 1 according to the first aspect of the present invention does not change the appearance of the shaft tube 2 even after adjusting the pen tip length from the front end of the shaft tube 2, so the appearance of the outer surface of the shaft tube 2 is impaired. There is no risk of being lost. In the writing instrument 1 of the first invention, since the writing body 5 and the operation body 6 are attached by screwing, it is possible to prevent the pen tip length from being shortened even by a large writing pressure during writing.

According to a second invention of the present application, in the writing instrument 1 of the first invention, a plurality of writing bodies 5 are accommodated in the shaft tube 2 so as to be movable in the front-rear direction, and each of the writing bodies 5 is stored as a bullet 7. The elastic bodies 7 are urged rearwardly, the respective elastic bodies 7 are accommodated in the shaft cylinders 2, the operating bodies 6 are attached to the rear ends of the respective writing bodies 5, and extend in the front-rear direction on the side wall of the axial cylinder 2. A plurality of window holes 41 are penetrated in the radial direction, the respective operation bodies 6 are protruded radially outward from the respective window holes 41, and one operation body 6 is slid forward along the window holes 41. Accordingly, it is a requirement that the pen point 51 of the writing body 5 to which the slidable operating body 6 is attached is selectively projected and retracted through the front end hole 31 of the shaft cylinder 2.

The writing instrument 1 of the second invention is a multi-core type retractable writing instrument 1 that can adjust the pen tip protruding length from the front end of the shaft tube 2 (that is, the pen tips 51 of a plurality of writing bodies 5 are selectively projected and retracted). A possible multi-core type retractable writing instrument) is obtained.

According to a third invention of the present application, in the writing instrument 1 of the second invention, the shaft cylinder 2 is detachably attached to a front shaft 3 having a front end hole 31 at a front end and a rear end portion of the front shaft 3. And the rear shaft 4 having the window hole 41 on the side wall. When the front shaft 3 is removed from the rear shaft 4, the front portion of each writing body 5 is projected outward from the front end of the rear shaft 4. The front part of each writing body 5 can be rotated, and the rotation of each operating body 6 is restricted by engaging each operating body 6 with the window hole 41.

In the writing instrument 1 of the third aspect of the invention, the user can easily adjust the pen tip length with the front shaft 3 removed.

According to a fourth invention of the present application, in the writing instrument 1 of the first, second, or third invention, the writing body 5 and the operating body 6 that are screwed together can be detached from the shaft cylinder 2, and the shaft cylinder 2 It is a requirement that the cursive body 5 and the operation body 6 removed from the inside can be rotated relative to each other.

Since the writing instrument 1 of the fourth invention can directly rotate the writing body 5 and the operation body 6, the user can reliably adjust the pen tip length. Furthermore, in the writing instrument 1 according to the fourth aspect of the present invention, when the outer surface of the operation body 6 or the outer surface of the writing body 5 has an uneven portion or a flat surface portion, slipping is prevented when pinched with fingers, and the writing body is further improved. 5 and the operating body 6 can be rotated relatively easily.

According to the writing instrument of the present invention, the pen tip length from the front end of the shaft tube can be adjusted, and the appearance of the shaft tube may be impaired even after adjusting the pen tip length from the front end of the shaft tube. Absent.

It is a longitudinal cross-sectional view of the all pen nib immersion state of embodiment of this invention. It is a longitudinal cross-sectional view which shows the pen tip protrusion state of FIG. It is a longitudinal cross-sectional view of the state which removed the front axis | shaft of FIG. It is a side view of the state which opened the opening part. It is a longitudinal cross-sectional view of the writing body and operation body of the state removed from the axial cylinder. It is a principal part expanded longitudinal cross-sectional view which shows the screwing state of a writing body and an operation body. It is a principal part expanded longitudinal cross-sectional view which shows the screwing state of a writing body and an operation body.

1 to 6 show an embodiment of the present invention.

In the writing instrument 1 of the present embodiment, a plurality of writing bodies 5 are accommodated in the shaft cylinder 2, and the pen tip 51 of each writing body 5 is selectively (alternative) from the front end hole 31 at the front end of the shaft cylinder 2. This is a multi-core type in / out type writing instrument that is in / out. An operation body 6 is attached to the rear end portion of each writing body 5 by screwing. Each of the writing bodies 5 is always urged rearward by a resilient body 7 (coil spring).

Shaft cylinder The shaft cylinder 2 includes a cylindrical front shaft 3 and a cylindrical rear shaft 4 that is detachably screwed to a rear end portion of the front shaft 3. The front shaft 3 and the rear shaft 4 are made of synthetic resin or metal material.

A front end portion of the front shaft 3 is formed in a tapered shape, and a front end hole 31 is provided through the front end of the front shaft 3 in the front-rear direction. A male screw portion 32 is formed on the outer peripheral surface of the rear end portion of the front shaft 3.

A female screw portion 43 is formed on the inner peripheral surface of the front end portion of the rear shaft 4. The male screw portion 32 of the front shaft 3 is screwed into the female screw portion 43. The rear end portion of the front shaft 3 and the front end portion of the rear shaft 4 are detachable by screwing.

A plurality of elongated window holes 41 extending in the front-rear direction are provided in the rear side wall of the rear shaft 4 in the radial direction. An opening 44 that penetrates in the axial direction and opens radially outward is formed at the rear end of the rear shaft 4. The opening 44 communicates with the window hole 41 at the rear end of the rear shaft 4 (that is, the rear end of the shaft cylinder 2), whereby the rear end of the window hole 41 is notched rearward and opened rearward. The writing body 5 to which the operating body 6 is attached is configured to be inserted into the shaft tube 2 and removable (replaceable) from the shaft tube 2 through the opening 44.

The operation bodies 6 of the respective writing bodies 5 are projected from the respective window holes 41 to the outside. By sliding the operation bodies 6 forward along the window holes 41, the pen tips 51 of the writing bodies 5 are selectively projected and retracted from the front end holes 31. Support portions 42 (for example, ribs extending in the axial direction) are integrally formed on the inner surfaces of the side walls between the window holes 41 of the rear shaft 4. The rear end of the operating body 6 attached to the rear end of the writing body 5 in the pen tip protruding state is abutted and locked to the support portion 42. A clip 46 is provided on the outer surface of the side wall between the window holes 41 of the rear shaft 4.

-Lid part At the rear end of the rear shaft 4, a lid part 8 is provided for opening and closing the opening 44. On the front surface of the lid portion 8, a contact portion 81 is formed on which the rear end of the operating body 6 attached to the pen-immersed writing body 5 can contact. The writing body 5 provided with the operating body 6 can be inserted into the shaft tube 2 and removed from the shaft tube 2 (replaceable) through the opening 44.

One end portion of the lid portion 8 is rotatably provided in the opening portion 44 by a hinge portion 82. An engagement portion 83 is provided on the front surface of the other end portion of the lid portion 8 (specifically, an engagement recess or an engagement hole portion is formed). An engaged portion 45 that can be engaged with the engaging portion 83 is provided at the rear end of the rear shaft 4 (specifically, an engaging convex portion protrudes). An inward projection is formed on the inner surface of the engagement portion 83 (engagement recess or engagement hole), while the outer surface of the engaged portion 45 (engagement projection) climbs over the inward projection. A lockable outward projection is formed. The engaging portion 83 and the engaged portion 45 are in an engaged state with each other when the lid portion 8 closes the opening 44 (specifically, the inward projection and the outward projection are over and locked). ), The contact between the operating body 6 and the contact portion 81 on the front surface of the lid portion 8 by the rearward urging of the projectile body 7 does not release the engaged state, and the lid portion 8 does not open.

Cursive body Each of the cursive bodies 5 is a ballpoint pen refill, and includes a ballpoint pen tip (that is, a pen tip 51) in which a ball is rotatably held at the front end, the ballpoint pen tip provided at the front end, and a rear end opened. And an ink containing tube 52. A screwed portion 53 is formed on the inner surface of the rear end opening of the ink containing tube 52.

Inside the ink storage tube 52, an ink composed of a water-based gel ink having shear thinning viscosity, a low-viscosity water-based ink, a low-viscosity oil-based ink, or a high-viscosity oil-based ink is stored. When the ink is a water-based gel ink having shear thinning viscosity, a low-viscosity water-based ink, or a low-viscosity oil-based ink, a high-viscosity fluid that moves forward as the ink is consumed at the rear end of the ink in the ink containing tube 52 A follower consisting of is filled.

Operation body The operation body 6 is screwed to the rear end of each of the writing bodies 5 (that is, the rear end opening of the ink containing tube 52). Each of the operation bodies 6 includes an operation portion 61 formed at the rear end portion and protruding outside from the window hole 41 of the shaft cylinder 2, a rear side protrusion portion 63 provided on the opposite side of the operation portion 61, A front projecting portion 62 provided in front of the rear projecting portion 63 on the opposite side of the operation portion 61, and a screw formed on the front end portion and screwed to a threaded portion 53 on the inner surface of the rear end portion of the ink containing tube 52. A wearing part 64 and a collar part 65 formed behind the screwing part 64 are provided. In addition, the rear end of the projectile 7 is locked to the front surface of the flange portion 65.

When the pen point 51 of the writing body 5 is in an immersive state, the rear end of the operating body 6 attached to the writing body 5 is brought into contact with a contact portion 81 formed on the front surface of the lid portion 8. On the other hand, when the pen point 51 of the writing body 5 is in a protruding state, the rear end of the operating body 6 attached to the writing body 5 is locked to a support portion 42 formed on the inner wall of the shaft tube 2.

The front projecting portion 62 of the operating body 6 connected to the rear end of the writing body 5 in the pen tip immersing state is in a pen tip protruding state when the operating portion 61 of the operating body 6 is slid forward. The pendant protruding state of the other writing object 5 is released by coming into contact with the rear protrusion 63 of the operating body 6 connected to the rear end of the other writing object 5.

According to the writing instrument 1 of the present embodiment, when the front shaft 3 is removed from the rear shaft 4, the front portion of each writing body 5 protrudes outward from the front end of the rear shaft 4, and the front of each writing body 5. The parts can be rotated, and the operation bodies 6 are engaged with the window holes 41 to restrict the rotation of the operation bodies 6. Thus, the user can easily adjust the pen tip length with the front shaft 3 removed.

FIG. 6 shows a case where the distance between the rear end of the operating tool 6 and the front end of the pen tip 51 is the minimum. In this case, in a state where the screwed portion 64 of the operating body 6 and the screwed portion 53 of the writing body 5 (ink containing tube 52) are screwed together, the rear end of the writing body 5 and the screwed portion 64 of the operating body 6 are used. The rear step portion is in close contact with the front and rear.

FIG. 7 shows a case where the distance between the rear end of the operating tool 6 and the front end of the pen tip 51 is set longer than that in FIG. In this case, in a state where the screwed portion 64 of the operating body 6 and the screwed portion 53 of the writing body 5 (ink containing tube 52) are screwed together, the rear end of the writing body 5 and the screwed portion 64 of the operating body 6 are used. A gap S is formed between the rear stepped portion.

According to the writing instrument 1 of the present embodiment, the writing body 5 and the operating body 6 that are screwed together can be removed from the shaft cylinder 2, and the writing body 5 and the operating body 6 removed from the shaft cylinder 2 can be directly removed. Relative rotation is possible, and the user can reliably adjust the pen tip length. Therefore, according to the writing instrument 1 of the present embodiment, the pen tip length from the front end of the shaft tube 2 can be adjusted, and the shaft tube 2 can be adjusted even after the pen tip length from the front end of the shaft tube 2 is adjusted. There is no risk of the appearance of the glass being impaired.

Furthermore, in the writing instrument 1 of the present embodiment, since the outer surface of the operation body 6 has a flat surface portion, it is prevented from slipping when pinched with fingers, and the writing body 5 and the operation body 6 can be further easily rotated relative to each other. Become.

DESCRIPTION OF SYMBOLS 1 Writing instrument 2 Shaft 3 Front shaft 31 Front end hole 32 Male thread part 4 Rear shaft 41 Window hole 42 Support part 43 Female thread part 44 Opening part 45 Engagement part 46 Clip 5 Writing body 51 Pen tip 52 Ink storage pipe 53 Screwed Wearing part 6 Operating body 61 Operating part 62 Front projecting part 63 Rear projecting part 64 Screwing part 65 Hook part 7 Ejection body 8 Cover part 81 Contact part 82 Hinge part 83 Engagement part

Claims (4)

A writing instrument in which a writing body is exchangeably accommodated in a shaft cylinder, and a pen tip of the writing body is projected outside through a front end hole of the shaft cylinder, and an operating body is screwed to a rear end of the writing body. The rear end of the operating body that is screwed to the writing body when the pen tip protrudes is brought into contact with the support portion on the inner surface of the shaft cylinder, and the distance between the rear end of the operating body and the front end of the pen tip is variable. Writing instrument characterized by having done. A plurality of writing bodies are accommodated in the shaft cylinder so as to be movable in the front-rear direction, each of the writing bodies is urged rearward by a projectile body, each of the projectile bodies is housed in a shaft cylinder, An operation body is attached to the rear end of each writing body, a plurality of window holes extending in the front-rear direction are provided in the side wall of the shaft cylinder in the radial direction, and each operation is performed radially outward from each window hole. By projecting the body and sliding one operation body forward along the window hole, the pen tip of the writing body to which the slide operation body is attached is selectively projected and retracted through the front end hole of the shaft cylinder. The writing instrument according to claim 1. The shaft cylinder includes a front shaft having a front end hole at a front end and a rear shaft removably attached to a rear end portion of the front shaft and having the window hole on a side wall. When removed from the front, the front part of each writing body protrudes outside from the front end of the rear shaft, the front part of each writing body can be rotated, and each operation body is engaged with the window hole. The writing instrument according to claim 2, wherein the rotation of each operating body is restricted thereby. The writing instrument according to claim 1, 2, or 3, wherein the writing body and the operating body that are screwed together can be removed from the shaft cylinder, and the writing body and the operating body removed from the shaft cylinder can be relatively rotated.

Images