KR20110126557A - Multi core writing instrument - Google Patents

Abstract

PURPOSE: A multi-cores writing instrument is provided to multiply design freedom and to easily exchange a taking notes shaft. CONSTITUTION: An outer tube(12) is composed of an opener(13), a front outer tube(14), and a rear outer tube(16). Taking notes shafts(20,22) are accepted within the outer tube. A ballpoint pen shaft(20) has an ink receiving pipe(20a) and a tip(20b). A sharp pencil shaft(22) equips with a fill core delivery device. Control units are connected to the backend of the taking notes shaft. Hanging pieces(24d,26d) are formed in back-end of main bodies(24a,26a) of the control unit. A longitudinal direct hole(16a) is formed in the rear part of the outer circumference of the outer tube. The backend of the longitudinal direct hole is obstructed.

Description

{MULTI CORE WRITING INSTRUMENT}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a multi-core writing instrument that accommodates a plurality of writing axes (writing shafts) in an outer cylinder, and more particularly to a multi-wing writing instrument which allows the writing shaft to be easily replaced.

Conventionally, as a multi-refill writing instrument of this kind, those disclosed in Patent Document 1 or 2 are known.

Patent Literature 1 and Patent Literature 2 disclose a configuration in which a plurality of writing axes are accommodated in an outer cylinder so as to be movable in the front and rear direction and each writing axis is pushed backward, an operating body is connected to the rear end of each writing axis, And the operating body is protruded outwardly from the window hole in the radial direction.

Patent Literature 1 discloses that an opening for opening the window hole rearward is formed at the rear end of the outer cylinder and an operating body connected to the writing shaft and the rear end of the writing shaft can be detached from the inside of the outer cylinder through the opening And a lid unit for closing the opening is attached to the rear end of the outer cylinder so as to be freely detachable so that a plurality of writing axes can be detached from the outer cylinder and exchanged.

Similarly, in Patent Document 2, an opening for opening the window hole rearward is formed at the rear end of the outer cylinder, and the operating body connected to the writing shaft and the rear end of the writing shaft can be detached from the inside of the outer cylinder through the opening, And the lid unit closing the opening is attached to the rear end of the outer cylinder so that the plurality of writing axes can be removed from the outer cylinder and replaced.

In this way, in the multi-refill writing instrument described in Patent Document 1 or 2, since the writing shaft and the operating body can be pulled out together from the rear of the outer cylinder, it is possible to prevent erroneous connection between the handwriting shaft and the operating body .

Patent Document 1: Japanese Patent Application Laid-Open No. 2007-15274 Patent Document 2: Japanese Patent Application Laid-Open No. 2007-30241

However, in the multi-refill writing instrument described in Patent Document 1 or 2, since it is necessary to provide a lid portion for opening and closing the opening portion for opening the window hole of the outer cylinder rearwardly to the operating body and the writing shaft at the rear end portion of the outer cylinder, There is a problem that the use is limited and the degree of freedom of design is reduced.

In addition, when exchanging the writing axis, it is necessary to perform an operation for opening and closing the lid unit, which is problematic in that the operation is troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multi-refill writing instrument which can increase the degree of freedom of design without deteriorating the usability of the rear end portion of the outer barrel, and can easily replace the writing shaft.

In order to achieve the above object, according to the invention of claim 1 of the present invention, there is provided an outer cylinder, wherein a plurality of writing axes are accommodated so as to be movable in the axial direction thereof, an operating body is connected to a rear end of the writing axis, And the front end of the writing shaft connected to the operating body is held at a position corresponding to the front end of the writing shaft by advancing one operating body and holding it at the front end side of the longitudinal bore, In a multi-refill writing instrument which is projected from a distal end of an outer cylinder,

Wherein the rear end of the longitudinal hole is closed and the operating body is configured to freely move in and out of the longitudinal hole in the radial direction and the writing shaft is connected to the operating body in a radial direction So as to freely move in and out of the outer cylinder.

The invention described in claim 2 is characterized in that, in the multi-refill writing instrument according to claim 1, the writing axis is flexible so that it can freely move in and out of the longitudinal hole in the radial direction.

According to a third aspect of the present invention, in the multi-refill writing instrument according to the first or second aspect, the engaging concave portion is formed at the rear end of the operating body so as to be hooked to the rear end of the longitudinal hole.

According to a fourth aspect of the present invention, in the multi-refill writing instrument according to the third aspect of the present invention, the operating body is slid forward forwardly with respect to the longitudinal hole so as to release the engagement from the engaging recess, .

According to a fifth aspect of the present invention, in the multi-refill writing instrument according to any one of the first to fourth aspects, the operating body is formed with a groove which can be a handle when it is inserted and removed in the radial direction.

According to a sixth aspect of the present invention, in the multi-refill writing instrument according to any one of the first to fifth aspects, a coil spring for pressing the writing shaft backward is wound around the outside of the writing shaft, And a portion having a smaller pitch than at least the center.

The invention according to claim 7 is characterized in that, in the multi-refill writing instrument according to any one of claims 1 to 6, when the writing shaft and the operating body are pulled out to the outside of the outer cylinder, the rear end of the coil spring wound around the outside of the writing shaft In the vicinity of the front end of the frame.

The invention according to claim 8 is the multi-ref obove writing instrument recited in any one of claims 1 to 7, wherein the longitudinal hole comprises a wide hole at the front portion and a narrow hole at the rear portion, And has a wide groove having a width larger than that of the narrow hole. The operating body has a body which is capable of sliding a wide hole and a wide groove, and a protruding portion capable of sliding a narrow hole.

According to a ninth aspect of the present invention, in the multi-refill writing instrument according to the eighth aspect, the main body of the operating body can be hooked to the engaging end (engaging step) formed in a wide groove.

According to a tenth aspect of the present invention, in the multi-refill writing instrument according to any one of the first to ninth aspects, an eraser rubber pedestal is provided at a rear end of the outer tube.

According to the present invention configured as described above, since the operating body can freely move in and out of the longitudinal hole in the radial direction, the operating body and the writing shaft connected to the operating body can be pulled out from the longitudinal hole when exchanging the writing shaft , And also it is possible to insert the operating body and the writing shaft from the longitudinal hole. Therefore, at the time of replacement, the rear end portion of the outer cylinder is not involved, so that the rear end portion of the outer cylinder can be used effectively, and the degree of freedom in designing the rear end portion of the outer cylinder can be increased.

In addition, the replacement operation is easy because the operation body and the writing shaft are sufficient for the operation of putting in and going out the longitudinal hole and the outer cylinder.

According to the invention as set forth in claim 2, by providing the writing shaft with sufficient flexibility, even when the axial length of the longitudinal hole is short, the writing shaft in the radial direction of the longitudinal hole at the time of exchanging the writing shaft can be smoothly performed.

According to the invention as set forth in claim 3, the engaging concave portion formed at the rear end of the operating body is hooked to the rear end of the longitudinal hole, so that the handwriting shaft can be accommodated in the outer barrel so that the handwriting shaft does not inadvertently escape from the longitudinal hole I can do it.

According to the invention as set forth in claim 4, when the handwriting shaft is exchanged, the operating body and the handwriting shaft are pulled out from the outer cylinder by sliding the operating body forward once to release the engagement between the engaging recess and the longitudinal hole It is possible to pay.

According to the invention as set forth in claim 5, since the groove is formed in the operating body, it is possible to carry out the work of entering and leaving with the groove as a handle.

According to the invention as set forth in claim 6, when the writing shaft is fitted in the outer cylinder, it is possible to make it difficult to cover the rear portion of the coil spring in the outer cylinder, and the tip of the writing shaft can easily be inserted into the coil spring.

According to the invention as set forth in claim 7, since the rear end of the coil spring is disposed near the front end of the longitudinal hole when the writing shaft and the operating body are pulled outward, the leading end of the writing shaft It is easy to insert into the inside of the coil spring.

According to the invention as set forth in claim 8, when replacing the writing shaft, the main body of the operating body can be inserted into a wide hole or wide groove, and the protruding portion of the operating body can be simultaneously inserted and removed into a narrow hole. In addition, the writing axis can be inserted into and out of the outer cylinder from a wide hole.

According to the invention as set forth in claim 9, since the main body of the operating body is engaged with the engagement end formed in the wide groove, the tip of the writing shaft can be held in a state protruding from the tip of the outer cylinder.

According to the invention described in claim 10, since the degree of freedom in designing the rear end portion of the outer cylinder increases, the eraser rubber pedestal can be provided at the rear end of the outer cylinder.

1 is an overall sectional view (cross-sectional view taken along line 1-1 of Fig. 4B) showing a multi-refill writing instrument according to an embodiment of the present invention.
FIG. 2A is a side view of the operating body, and FIG. 2B is a perspective view.
Fig. 3A is a side view of another operating body, and Fig. 3B is a perspective view.
Fig. 4A is a vertical sectional view of the guide stopper, Fig. 4B is a view from the direction of 4b in Fig. 4A, Fig. 4C is a perspective view, and Fig. 4D is a perspective view from the opposite direction.
FIG. 5A is a plan view of the rear shaft, FIG. 5B is a longitudinal sectional view, FIG. 5C is a sectional view taken along line 5C-5C, FIG. 5D is a sectional view taken along line 5D- 5F is a cross-sectional view taken along line 5f-5f.
6 is a perspective view showing a procedure for exchanging a writing axis of a multi-refill writing instrument.
7 is an overall sectional view showing a state in which a writing shaft of a multi-refill writing instrument is exchanged.
8A is a cross-sectional view showing a relationship between a longitudinal hole at the time of replacement of a writing axis and an operating body, and FIG.
9 is a view showing a modification of the coil spring.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the multi-refill writing instrument 10 shown in Fig. 1, the outer cylinder 12 is generally composed of a leading tool 13, a front outer cylinder 14 and a rear outer cylinder 16. The front end of the front outer barrel 14 is press-fitted into the front mouth 13 and is detachably connected. The rear end of the front outer barrel 14 is press-fitted into the adapter 18 so as not to be detachable. The adapter 18 and the rear outer barrel 16 are detachably connected to each other by screwing. On the other hand, reference numeral 19 denotes an elastic grip provided on the grip portion of the user of the front shaft 12. On the other hand, the outer tube 12 can be composed of fewer members or more members than the example shown in Fig.

A plurality of (five in this embodiment) writing shafts 20, 22 are accommodated in the outer cylinder 12. [ The combination of the plurality of writing shafts 20, 22 is arbitrary, so that the user can select a desired combination of the writing shafts 20, 22. In the example shown in Fig. 1, a combination of four ballpoint shafts 20 and one sharp pencil shaft 22 is selected as a writing axis.

The ballpoint pen shaft 20 has an ink containing tube 20a in which ink is stored and a tip 20b which is attached to the tip end of the ink containing tube 20a and contains a ball. The plurality of ballpoint shafts 20 may be a combination of different colors such as a combination of colors of ink of a desired color or a combination of balls of different diameters.

A known lead delivery mechanism for delivering the writing shaft by advancing the chuck is incorporated in the mechanical pencil shaft 22, for example, as disclosed in Japanese Utility Model Publication No. 6-32397. When the tip end of the mechanical pencil shaft 22 protrudes from the front end of the punch 13 and the mechanical pencil axis 22 is knocked forward (by operating the operating body 26 described later) 22 is brought into contact with the inner wall of the front end of the punch 13 so that the lead delivery mechanism advances and the lead is sent out.

The combination of writing axes is not limited to this, and may be a relatively soft handwriting such as a cosmetic core such as an eyebrow or an eyeliner, an eraser rubber, and a false. In this case, The handwriting shim may be held by a rod having a small thickness and the handwriting shim may be dispensed by sending out the thin rods like a shim in the case of the mechanical pencil shaft 22 as shown in Fig.

The operating bodies 24 and 26 are connected to the rear ends of the writing shafts 20 and 22, respectively. As shown in Figs. 2 and 3, the operating bodies 24 and 26 are provided with bodies 24a and 26a, and a pair of operating bodies 24 and 26 that protrude in the outer diameter direction from the rear portions of the bodies 24a and 26a, The operation protrusions 24b and 26b and the protrusions 24c and 26c protruding in the inner diameter direction from the main bodies 24a and 26a are formed.

At the rear ends of the bodies 24a, 26a of the operating bodies 24, 26, engaging pieces 24d, 26d projecting rearward are formed.

The protrusions 24c and 26c of the operating bodies 24 and 26 are thinner than the main bodies 24a and 26a. The protrusions 24c and 26c have a plurality of engaging pieces 24e and 26e at their inner radial ends and have engaging recesses 24f and 26f at their rear ends. The inner diameter side of the engaging concave portions 24f, 26f is inclined surfaces 24g, 26g.

The operating projection 26b of the operating body 26 is a mounting seat for the clip and a clip 30 is attached to the mounting seat for the clip. A small groove 24h is formed in the side surface of the operation projection 24b of the operating body 24. [

The front ends of the operating bodies 24 and 26 are formed with fitting portions 24i and 26i to be fitted into the writing shafts 20 and 22 for connection to the writing shafts 20 and 22, respectively.

A guide stopper 32 for guiding the writing shafts 20, 22 is fixed inside the rear shaft 16. 4, the guide stopper 32 includes a main body 32b having an insertion hole 32a through which the writing shafts 20 and 22 are inserted, and an insertion hole 32a of the main body 32b. And a guide portion 32d formed with a guide path 32c extending rearward from the guide portion 32d.

Between the main body 32b of the guide stopper 32 and each of the operating bodies 24, a coil spring 33 as an elastic body is fitted. Each of the coil springs 33 is wound around the outer periphery of each of the writing shafts 20 and 22 so as to always push the writing shafts 20 and 22 backward.

The coil spring 33 may be a conventional spring having a uniform pitch except for both ends, but preferably, as shown in Fig. 9, the pitch of the coil spring 33 is smaller at the center than at the center in its natural state, It is good to use a spring with a part that is made as a part. Alternatively, a spring having a portion wound tightly on the rear portion may be used.

Each of the operating bodies 24 and 26 is inserted into the longitudinal hole 16a formed in the rear outer circumferential surface of the rear shaft 16 so as to be axially slidable. As shown in Fig. 5, each longitudinal hole 16a has a wide hole 16a1 having a wide hole width at its front end, a narrow hole 16a2 having a narrow hole width at its rear end, The rear end of the longitudinal hole 16a2 is not opened, and the rear end of the longitudinal hole 16a is closed. The periphery of the narrow hole 16a2 is a wide groove 16b having the same width as the wide hole 16a1. The main bodies 24a and 26a of the operating bodies 24 and 26 can be inserted into the wide holes 16a1 and the wide grooves 16b while the operating bodies 24 26, 26c can be disassembled. The engaging end portion 16c is formed in the longitudinal direction of the wide groove 16b and the groove 16b1 having a shallow depth is formed in the rear portion of the wide groove 16b than the narrow hole 16a2 .

Preferably, an expanded portion 16a3 having a wider groove width than the narrower hole 16a2 and a narrower groove width than the wider groove 16b may be formed at the rear end of the narrower hole 16a2.

A circular opening 16d is formed in the rear end face of the rear shaft 16, and an eraser rubber pedestal 34 is further provided on the rear side. Although the eraser rubber pedestal 34 is integrally formed with the rear shaft 16, the eraser rubber pedestal 34 is not limited to this and may be a separate body.

An eraser rubber 36 is inserted into the eraser rubber pedestal 34 and an eraser rubber cover 38 is attached to the eraser rubber pedestal 34 so as to be removable when the eraser rubber 36 is not used have.

In the multi-refill writing instrument 10 configured as described above, when all of the writing shafts 20, 22 are accommodated in the outer tube 12, the engaging concave of the operating bodies 24, 26 of all the writing shafts 20, The portions 24f and 26f are caught by the rear end of the narrow hole 16a2 of the longitudinal hole 16a (see the operating body 26 in Fig. 1). Therefore, the writing shafts 20, 22 do not inadvertently escape when they are in the outer cylinder 12. [ Further, even if the clip 30 is pivoted for use, the operating body 26 does not inadvertently escape.

When using the writing shafts 20 and 22, one of the writing shafts 20 and 22 is projected. The operating projection 24a of one operating body 24 or the operating projection 26a or clip 30 of the operating body 26 connected to the desired writing axes 20 and 22 can be moved in the longitudinal direction The main bodies 24a and 26a of the corresponding operating bodies 24 and 26 are moved along the wide holes 16a1 and the wide grooves 16b to move the operating bodies 24, 26 move along the narrow hole 16a2. When the corresponding bodies 24a, 26a pass the engagement end 16c, they can enter the inner diameter direction of the longitudinal hole 16a. Thus, when the operation is stopped, the engaging pieces 24d and 26d are caught by the engaging end portion 16c, so that the advancing state is maintained. Therefore, the tips of the corresponding writing shafts 20, (See the writing shaft 20 in Fig. 1).

In this state, in order to switch (change) the writing shafts 20 and 22 to be used, the operating protrusions 24a and 24b of any one of the operating bodies 24 connected to the other desired writing shafts 20 and 22, Or the operating projection 26a of the operating body 26 or the clip 30 is slid forward along the longitudinal hole 16a. 26c of the operating bodies 24, 26 of the writing shafts 20, 22 on which the engaging pieces 24e, 26e of the projecting portions 24c, 26c of the other operating bodies 24, 26 project are projected, The operating bodies 24 and 26 are released from the engaged state and the spring 33 is released so that the operating bodies 24 and 26 protrude to the outside so as to interfere with the engaging pieces 24e and 26e of the operating bodies 24 and 26, And is returned to the rear by the pushing force of the pushing force. The engaging pieces 24d and 26d of the operating bodies 24 and 26 connected to the other desired writing shafts 20 and 22 are caught by the engaging end portions 16c so that the desired writing shafts 20, 22 are kept in the advanced state and can be used.

Next, a case where the writing shafts 20 and 22 are consumed or a case where the writing shafts 20 and 22 are to be changed to another type will be described with reference to Figs. 6 and 7. Fig. The operating projections 24a and 26a of the operating bodies 24 and 26 connected to the writing shafts 20 and 22 to be changed are held by hand and pulled out of the longitudinal holes 16a in the radial direction. At this time, when the writing shaft 20 is slightly slid forward one time against the spring force of the spring 33 and then pulled outward in the radial direction, the distance between the narrow hole 16a2 of the engaging concave portions 24f and 26f Since the latch is released, it can be pulled out. At this time, the inclined surfaces 24g and 26g help to release the engagement.

8, there is no such thing as a flange hanging on the longitudinal hole 16a, so that the operating bodies 24 and 26 can be easily pulled out to the outside. In addition, the operating bodies 24 and 26 have a small groove 24h, And the clip 30 are provided, so that they can be pulled outwardly with a handle. When the operating bodies 24 and 26 are pulled out from the longitudinal hole 16a, the engaging pieces 24e and 26e of the operating bodies 24 and 26 are separated by the shallow depth groove 16b1 from the wide grooves 16b So that it can smoothly pass through the longitudinal hole 16a.

Then, the writing shafts 20 and 22 are pulled outwardly from the operating bodies 24 and 26 by using the flexibility of the writing shafts 20 and 22 themselves. Therefore, the writing shafts 20 and 22 can pass through the wide hole 16a1 of the longitudinal hole 16a to be able to move in and out of the outer cylinder 12. [ At this time, the rear end of the spring 33 which has wrapped around the outer periphery of the writing shafts 20, 22 interferes with the rear shaft 16 near the front end of the longitudinal hole 16a of the rear shaft 16, It is good if it can not be done.

The writing shafts 20 and 22 are inserted into the longitudinal hole 16a from the front end thereof while the other writing shafts 20 and 22 after replacement are connected to the operating bodies 24 and 26 according to the reverse procedure. And inserted into the spring 33 waiting near the front end of the longitudinal hole 16a and inserted into the outer cylinder 12. [ In this way, the exchange operation can be terminated. On the other hand, if the rear portion of the coil spring 33 has a small pitch or a closely wound portion, there is no fear that the tip of the coil spring 33 is caught by the coil spring 33 when the writing shafts 20, The insertion operation can be performed smoothly.

Since the operating bodies 24 and 26 are configured to be able to move in the radial direction with respect to the longitudinal hole 16a as described above, the replacement operation is simple. The operating bodies 24 and 26 are connected to the writing shafts 20 and 22 accommodated in the outer cylinder 12 and the engaging concave portions 24f of the operating bodies 24 and 26 And 26f are caught at the rear end of the longitudinal hole 16a, the operating bodies 24 and 26 are not inadvertently deviated from the longitudinal hole 16a.

Since the operating bodies 24 and 26 and the writing shafts 20 and 22 are inserted and withdrawn in the radial direction of the longitudinal hole 16a, the rear end of the rear shaft 16 is connected to the operating bodies 24 and 26, And is not influenced by the entry and exit of the shafts 20 and 22. [ That is, in this example, the rear end of the longitudinal hole 16a is clogged by the eraser rubber pedestal 34 and used as a storage space for the eraser rubber. Thus, the degree of freedom in designing the rear end portion of the outer cylinder 12 can be increased. The effective use of the rear end portion of the outer cylinder 12 is not limited to the storage of the eraser rubber but may be arbitrarily used.

10 - - - Multi-Purpose Writing Instruments
12 - - - Shaft
16a - - - longitudinal hole
16a1 - - - Wide hole
16a2 - - - Narrow hole
16b - - - Wide groove
16c - - - Engaging end
20, 22 - - - Writing axis
24, 26 - - - Operator
24a, 26a - - - Body
24c and 26c - - - projections
24f, 26f - - -
24h - - - Small groove
33 - - - Coil spring
34 - - - Eraser rubber bracket

Claims (10)

A plurality of writing axes are accommodated in the outer cylinder so as to be movable in the axial direction thereof. An operating body is connected to a rear end of the writing shaft, and the operating bodies are inserted into a longitudinal hole formed in the outer peripheral surface of the rear outer cylinder, Wherein one end of the writing shaft connected to the operating body is projected from the distal end of the outer cylinder by advancing one operating body and holding it on the front end side of the longitudinal hole,
Wherein the operating body is configured to freely move in and out of the longitudinal hole in a radial direction thereof, and the writing shaft passes through the longitudinal hole in the radial direction in a state where the writing shaft is connected to the operating body So as to be able to freely enter and exit the outer cylinder.
The multi-refill writing instrument according to claim 1, wherein the writing shaft has flexibility such that it can freely move in and out of the longitudinal hole in the radial direction.
3. The multi-refill writing instrument according to claim 1 or 2, wherein a latching recess portion is formed at a rear end of the operating body so as to be hooked to a rear end of the longitudinal hole.
The multi-refill writing instrument according to claim 3, wherein the operating body is configured to be able to be pulled out from the longitudinal hole by once sliding forward with respect to the longitudinal hole and releasing the engagement from the engaging recess.
The multi-refill writing instrument according to any one of claims 1 to 4, wherein the operating body is formed with a groove which can be a handle when it is inserted and removed in the radial direction.
6. The spindle motor according to any one of claims 1 to 5, wherein a coil spring for winding the writing shaft backward is wound around the outer periphery of the writing shaft, wherein a rear portion of the coil spring is tightly wound, And a center portion.
7. The stapler according to any one of claims 1 to 6, wherein when the writing shaft and the operating body are pulled out to the outside of the outer cylinder, the rear end of the coil spring wound around the periphery of the writing shaft is arranged near the front end of the longitudinal hole And a second multi-purpose writing instrument.
8. The apparatus according to any one of claims 1 to 7, wherein the longitudinal hole comprises a wide hole at the front and a narrow hole at the rear, wherein the perimeter of the narrow hole is wider than the narrow hole Wherein the operating body has a main body that is capable of slidingly moving a wide hole and a wide groove, and a protruding portion capable of sliding a narrow hole.
The multi-refill writing instrument according to claim 8, characterized in that the main body of the operating body is capable of being hooked on a locking end formed in a wide groove.
10. The multi-refill writing instrument according to any one of claims 1 to 9, wherein an eraser rubber pedestal is provided at a rear end of the outer cylinder.

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