WO2014041902A1

WO2014041902A1 - Writing instrument

Info

Publication number: WO2014041902A1
Application number: PCT/JP2013/070137
Authority: WO
Inventors: 欣也松下; 哲也福井
Original assignee: コクヨＳ＆Ｔ株式会社
Priority date: 2012-09-13
Filing date: 2013-07-25
Publication date: 2014-03-20
Also published as: JP2014054776A; JP6024324B2; IN2015KN00655A; CN104619515B; CN104619515A

Abstract

The present invention is provided with: a writing instrument body (H) in which a pen tip (5) is supported in a distal end part; an ink cartridge (2) screwed into the writing instrument body (H) and capable of storing ink therein; a cover (3) for covering the ink cartridge (2), the cover (3) being screwed into the writing instrument body (H), and an interlocking mechanism (R) for transmitting, to the ink cartridge (2), a screwing force exerted when the cover (3) is screwed into the writing instrument body (H), so as to also screw the ink cartridge (2) into the writing instrument body (H); and the interlocking mechanism (R) is configured so that a separation force exerted to separate the cover (3) from the writing instrument body (H) is not transmitted to the ink cartridge (2).

Description

Writing instrument

The present invention provides a writing instrument main body having a pen tip supported at the tip, an ink cartridge that can be screwed into the writing instrument main body and can store ink therein, and the ink cartridge that covers the ink cartridge and is screwed into the writing instrument main body. It is related with the writing instrument provided with the cover.

Conventionally, a writing instrument body in which a pen tip is supported at the tip, an ink cartridge that is attached to the writing instrument body and can store ink therein, and a cover that covers the ink cartridge and is screwed onto the writing instrument body As a configuration for attaching an ink cartridge to a writing instrument body in the writing instrument provided, a configuration in which the ink cartridge is press-fitted into the writing instrument body is known (for example, see Patent Document 1).

However, in the configuration of the invention described in Patent Document 1, when the ink cartridge is attached to the writing instrument body, it is necessary to press the ink cartridge strongly against the writing instrument body, and when the ink cartridge is removed from the writing instrument body, the ink cartridge is vigorous. There is a possibility that the ink is often detached from the writing instrument body and the ink remaining in the ink cartridge is scattered outside. In order to solve this problem, a configuration in which the ink cartridge is also screwed to the writing instrument body is conceivable.

However, when the ink cartridge and the cover are screwed separately to the writing instrument body, it is necessary to perform the screwing work twice, and there is a problem that the work is felt complicated. On the other hand, when adopting a configuration in which the ink cartridge and the cover are screwed to the writing instrument body and detached from the writing instrument body at the same time in one operation, immediately after the ink cartridge and the cover are detached from the writing instrument body, Depending on the orientation of the ink cartridge, another problem that ink remaining in the ink cartridge spills may occur.

JP 2003-048398 A

The present invention pays attention to the above points, and allows the ink cartridge to be attached to the writing instrument main body with a small force, while reducing the labor for attaching the ink cartridge and the cover to the writing instrument main body. An object of the present invention is to suppress the occurrence of a problem that ink spills to the outside when it is removed from the printer.

In order to solve the above problems, the writing instrument according to the present invention has a configuration as described below. That is, the writing instrument according to the present invention includes a writing instrument body in which a pen tip is supported at the tip, an ink cartridge that is screwed into the writing instrument body and can store ink therein, and covers the ink cartridge to cover the writing instrument body. A cover to be screwed, and an interlocking mechanism for transmitting the screwing operation force to the ink cartridge when the cover is screwed to the writing instrument body and screwing the ink cartridge to the writing instrument body; The interlocking mechanism is configured so that a detaching operation force for detaching the cover from the writing instrument body is not transmitted to the ink cartridge.

According to such a configuration, when a screwing operation force for screwing the cover onto the writing instrument body is applied to the cover, the screwing operation force is transmitted to the ink cartridge, and the ink cartridge is also attached to the writing instrument body. Screwed. Accordingly, the ink cartridge and the cover can be attached at the same time with a small force and a minimum of labor. On the other hand, even if a detaching operation force for detaching from the writing instrument body is applied to the cover, the detaching operation force is not transmitted to the ink cartridge, and only the cover is removed. As a result, when removing the ink cartridge, it is possible to prompt the user to visually recognize the remaining amount of ink in the ink cartridge by removing only the cover prior to the removing operation of the ink cartridge. Therefore, when ink remains in the ink cartridge, the opening of the ink cartridge faces upward to prevent the ink from spilling when the ink cartridge is removed.

As an example of a configuration for realizing such an interlocking mechanism of a writing instrument with a simple configuration, the interlocking mechanism engages the ink cartridge and the cover in an uneven manner, and the ink cartridge and the cover are screwed onto the writing instrument body. When attaching, a screwing operation force is transmitted from the cover to the ink cartridge via the concave / convex engaging portion, and the concave portion of the concave / convex engaging portion causes the cover to be detached from the writing instrument body. Is provided with a cam surface that guides in a direction to separate the ink cartridge and the cover without transmitting a detaching operation force to the ink cartridge while being in sliding contact with the convex portion of the concave-convex engaging portion. .

The writing instrument main body includes a barrel portion with a tip end supporting a pen tip, a batting housed inside the barrel portion, and a supply pipe disposed between the batting and the ink cartridge. As an example of a configuration for attaching the ink cartridge and the cover to the writing instrument main body in the writing instrument, the ink cartridge is screwed to the supply pipe, and the cover is screwed to the barrel. The thing that is.

As a configuration for locking the cover to the writing instrument main body, a positioning portion for positioning in the circumferential direction between the writing instrument main body and the cover is provided between the writing instrument main body and the cover. Can be mentioned.

As an example of a configuration for realizing the positioning portion described in the previous stage with a simple configuration, a locking projection provided continuously with a male screw thread provided on one of the writing instrument main body and the cover, and provided on the other The thing formed by engaging the latching recessed part provided by notching a female screw thread is mentioned.

According to the present invention, the ink cartridge can be attached to the writing instrument main body with a small force, and the ink cartridge and the cover can be attached to the writing instrument main body while reducing the labor for attaching the ink cartridge and the writing instrument main body. Occurrence of a problem that ink spills outside can be suppressed.

The whole perspective view of the writing instrument which concerns on one Embodiment of this invention. The front view of the writing instrument which concerns on the same embodiment. The center positive sectional view of the writing instrument concerning the embodiment. The disassembled perspective view of the writing instrument which concerns on the same embodiment. The disassembled perspective view of the principal part of the writing instrument which concerns on the same embodiment. The exploded plane sectional view of the writing instrument concerning the embodiment. Schematic which shows the writing instrument which concerns on other embodiment of this invention.

An embodiment of the present invention will be described below with reference to FIGS.

The writing instrument 1 of the present embodiment is suitably used as a whiteboard marker. As shown in FIGS. 1 to 6, the writing instrument main body H in which the tip 5 is supported at the tip, and the writing instrument main body H An ink cartridge 2 that is screwed and can store ink therein, and a cover 3 that can cover the ink cartridge 2 and is screwed to the writing instrument body H are provided. The writing instrument body H has a tip 4 that supports a pen tip 5 and can accommodate a part of the ink cartridge 2 inside, and the ink cartridge 2 that is accommodated inside the body 4. And a pen 6 provided between the pen tip 5 and a supply pipe 7 for supplying the ink in the ink cartridge 2 to the pen tip 5 through the fill 6. The writing instrument 1 also includes a cap 8 that can be attached to and detached from the body 4 for covering the nib 5 when not used as a writing instrument.

As shown in FIGS. 1, 3, 5, and 6, the ink cartridge 2 can store ink therein and open toward the front end side, and can close the opening of the cartridge body 21. And a lid 22. The cartridge body 21 has a collar 211 at a portion near the pen tip 5, and a drive projection 212 from the collar 211 toward the side opposite to the pen tip 5. The cartridge body 21 is provided with a male screw 213 that can be screwed into a female screw 74 provided in the supply pipe 7. That is, the ink cartridge 2 is screwed into the supply tube 7 by screwing the male screw 213 of the ink cartridge 2 into the female screw 74 provided in the supply tube 7. The cartridge body 21 is provided with first and second

lid locking ribs

214 and 215 for locking the lid 22. These first and second

lid locking ribs

214 and 215 both extend in the circumferential direction on the inner surface of the cartridge body 21 and are provided in a plurality intermittently. On the other hand, when the lid body 22 is circulated as a single ink cartridge 2 filled with ink in the cartridge body 21, the first and second lid members of the cartridge body 21 are shown in FIG. The opening of the cartridge body 21 is closed while being arranged between the

retaining ribs

214 and 215. Here, clearances are provided between the lid body 22 and the first lid locking rib 214 and between the lid body 22 and the second lid locking rib 215. When the male screw 213 of the cartridge main body 21 is screwed into the female screw 74 provided on the supply pipe 7 and attached, the lid 22 strikes the lid opening rib 75 provided on the supply pipe 7 and moves. As shown in FIGS. 3 and 4, the opening of the cartridge body 21 is opened. The ink cartridge 2 is covered with a cover 3 when the writing instrument 1 is used.

As shown in FIGS. 1 to 6, the cover 3 has a substantially cylindrical shape, and has a male screw 31 that can be screwed into a female screw 44 provided on the body portion 4 on the distal end side, and a base end portion that is hemispherical. I am doing. That is, the cover 3 is screwed onto the barrel 4 by screwing the male screw 31 of the cover 3 into the female screw 44 provided on the barrel 4. In addition, a drive recess 32 that can engage with the drive protrusion 212 of the ink cartridge 2 is provided on the front end surface of the cover 3. The drive recess 32 presses the drive protrusion 212 when the male screw 31 is screwed into a female screw provided on the barrel 4 to screw the cover 3 onto the barrel 4, thereby applying a screwing operation force to the ink cartridge 2. The detaching operation force is transmitted to the ink cartridge 2 when the male surface 213 is released and the male screw 213 is released from the standing surface 32a for transmitting to the body part 4 to disengage the cover 3 from the body part 4. And a cam surface 32b for guiding in a direction away from the drive protrusion 212. That is, the drive protrusion 212 and the drive recess 32 transmit the screwing operation force to the ink cartridge 2 when the cover 3 is screwed to the body 4 constituting the writing instrument main body H, and the ink cartridge 2 An interlocking mechanism R having a function of screwing the cartridge 2 to the supply pipe 7 constituting the writing instrument main body H and not transmitting the detaching operation force for detaching the cover 3 from the writing instrument main body H to the ink cartridge 2. Is configured.

As described above and as shown in FIGS. 3 to 5, the nib 5 is held by the nib holding rib 42 provided on the inner periphery at the tip of the body 4 constituting the writing instrument body H. The pen tip 5 used in this type of writing instrument 1 has the same configuration as that known.

As shown in FIG. 1 to FIG. 4 and FIG. 6, the body portion 4 has a substantially cylindrical shape, and has a pen tip support portion having a smaller diameter than other portions for supporting the pen tip 5 at one end portion. 41. As shown in FIG. 3, four pen tip holding ribs 42 are provided on the inner surface of the pen tip support portion 41 so as to be spaced apart from each other by 90 ° in the circumferential direction. Hold. In addition, on the inner surface of the portion adjacent to the pen tip support portion 41 of the barrel portion 4, as shown in FIG. 3, there are provided eight batting retaining ribs 43 that are spaced apart by 45 ° in the circumferential direction, The batting holding rib 43 holds the batting 6. Four of these batting holding ribs 43 are substantially continuous with the pen tip holding rib 42 and are longer than the other four ribs. Further, as shown in FIGS. 3, 5 and 6, the inner surface of the end portion of the body portion 4 opposite to the pen tip support portion 41 is screwed with the male screw 31 of the cover 3 described above, and this cover. A female screw 44 for attaching 3 to the body 4 is provided. In addition, a positioning portion for positioning them is provided between the body portion 4 and the cover 3. This positioning portion is provided continuously from the positioning recess 45 provided by cutting out a part of the thread of the female screw 44 of the body portion 4 and the screw thread of the male screw 31 of the cover 3, and can be engaged with the positioning recess 45. The positioning protrusion 33 is engaged. Further, the positioning portions are provided at four locations in a state where they are separated by 90 ° in the circumferential direction.

The batting 6 has a configuration similar to that known as the batting 6 used in this type of writing instrument 1. That is, as shown in FIG. 3 and FIG. 6, it is provided with a batting body 61 made of a large number of fibers extending in the longitudinal direction of the writing instrument 1 and a resin batting cover 62 for accommodating the batting body 61 therein. Yes. As shown in FIG. 6, the batting 6 is held by the batting holding ribs 43 of the barrel 4 while being inserted into the barrel 4. The batting cover 62 is made of a polypropylene film, has no air permeability, and does not have a function of passing ink from the inside to the outside. And the nib 5 and the supply pipe | tube 7 are each inserted in the inside of this batting 6 from the longitudinal direction both ends of this batting 6.

As shown in FIGS. 2 to 6, the supply pipe 7 is provided with a single supply pipe main body 71 whose pen tip 5 side is inserted into the batting 6 and an outer side of the supply pipe main body 71. An outer cylinder 72 for connecting the main body 71 and the ink cartridge 2 is provided. The supply pipe main body 71 has a protrusion 71a for partially forming a portion having a high fiber density by compressing the fibers of the batting 6 by being inserted into the batting 6 on the pen tip 5 side end surface, There is a single supply path 71c for circulating ink and air inside. The opening end of the supply path 71c on the pen tip 5 side opens from the projecting portion 71a to the non-projecting portion 71b. Further, the supply pipe main body 71 has an elliptical cross-sectional shape. On the other hand, on the pen tip 5 side of the outer cylindrical body 72, there is provided an anti-rotation recess 72a for engaging with the long batting retaining rib 43 of the body portion 4 to prevent the supply pipe 7 from rotating. Yes. Further, an inner wall 73 is provided on the inner side of the end of the outer cylinder 72 opposite to the nib 5, and the tip of the ink cartridge 2 is interposed between the inner wall 73 and the outer cylinder 72. I try to insert it. Further, on the inner surface of the end portion of the supply pipe 7 opposite to the nib 5, a female screw 74 for screwing the male screw 213 of the ink cartridge 2 and attaching the ink cartridge 2 to the supply pipe 7 is provided. In addition, a lid opening rib 75 is provided for hitting the lid body 22 and pressing the lid body 22 to release it. The end opposite to the nib 5 has a smaller diameter than the adjacent part, and the supply pipe 7 is formed by engaging the end 46 with the protrusion 46 provided on the body 4. It tries to prevent the slipping out.

Here, the procedure when the ink cartridge 2 and the cover 3 of the present embodiment are attached to and detached from the writing instrument body H and the operation of each part will be described.

When attaching the ink cartridge 2 and the cover 3 to the writing instrument main body H, first, with the base end side portion of the ink cartridge 2 inserted into the cover 3, the drive recess 32 of the cover 3 and the ink cartridge 2 The drive projection 212 is engaged with the concave and convex portions. Then, a screwing operation force is applied so that the male screw 31 of the cover 3 and the female screw 44 of the body 4 of the writing instrument body H are screwed together. At this time, the upright surface 212a of the drive projection 212 is positioned in front of the upright surface 32a of the drive recess 32, so that the

upright surfaces

32a and 212a collide with each other and screw into the ink cartridge 2 from the cover 3. The attachment operation force is transmitted, and the male screw 213 of the ink cartridge 2 and the female screw 74 of the supply pipe 7 of the writing instrument body H are screwed together. In this way, the cover 3 is screwed to the body 4 and the ink cartridge 2 is screwed to the supply pipe 7.

On the other hand, when the cover 3 is removed from the writing instrument main body H, a detachment operation force is applied to the cover 3 so that the male screw 31 of the cover 3 and the female screw 44 of the body 4 are rotated in a direction to be released. . At this time, the rising surface 32a of the driving recess 32 of the cover 3 and the rising surface 212a of the driving protrusion 212 of the ink cartridge 2 are separated from each other, and the cam surface 32b of the driving recess 32 is in sliding contact with the tip of the driving protrusion 212. The force is not transmitted to the ink cartridge 2. That is, only the cover 3 is removed from the body 4 of the writing instrument body H while keeping the ink cartridge 2 screwed to the supply pipe 7.

As described above, according to the present embodiment, when the cover 3 is screwed to the writing instrument body H, the screwing operation force is transmitted to the ink cartridge 2 so that the ink cartridge 2 is also used as the writing instrument. Since the interlocking mechanism R configured to be screwed to the main body H is provided, the mounting operation of the ink cartridge 2 and the cover 3 can be performed simultaneously with a small force and a minimum of labor. On the other hand, even if a detachment operation force for detaching from the writing instrument main body H is applied to the cover 3, the detachment operation force is not transmitted to the ink cartridge 2, and only the cover 3 is removed. Accordingly, when removing the ink cartridge 2, it is possible to prompt the user to visually recognize the remaining amount of ink in the ink cartridge 2 by removing only the cover 3 prior to the removal operation of the ink cartridge 2. Therefore, when ink remains in the ink cartridge 2, it is possible to prevent ink from spilling when the ink cartridge 2 is removed by, for example, opening the ink cartridge 2 upward.

When the interlocking mechanism R engages the drive protrusion 212 of the ink cartridge 2 and the drive recess 32 of the cover 3 so that the ink cartridge 2 and the cover 3 are screwed to the writing instrument body H, these drive protrusions 212 is configured to transmit a screwing operation force from the cover 3 to the ink cartridge 2 through a portion where the concave portion 212 and the driving concave portion 32 engage with each other, and the driving concave portion 32 connects the cover 2 to the writing instrument body H. A cam surface 32a is provided for guiding the ink cartridge 2 and the cover 3 in the direction of separating them without transmitting the detachment operation force to the ink cartridge 2 while being in sliding contact with the drive protrusion 212. Therefore, such an interlocking mechanism R can be realized with a simple configuration.

The writing instrument main body H is arranged between a body part 4 having a tip end supporting a pen tip 5, a batting 6 housed in the body part 4, and the batting 6 and the ink cartridge 2. The ink cartridge 2 is screwed to the supply pipe 7 and the cover 3 is screwed to the body portion 4. The interlocking mechanism R can be easily realized.

In addition, circumferential positioning between the writing instrument main body H and the cover 3 is performed between the writing instrument main body H and the cover 3, more specifically, between the body 4 and the cover 3. Therefore, the cover 3 can be locked to the writing instrument body H.

The positioning portion is formed by cutting out the positioning protrusion 33 provided continuously from the screw thread of the male screw 33 provided on the cover 3 and the screw thread of the female screw 44 provided on the body part 4 of the writing instrument main body H. Since the locking recess 45 provided is engaged, such a positioning portion can be realized with a simple configuration.

Note that the present invention is not limited to the above-described embodiment.

For example, in the above-described embodiment, a driving recess is provided on the front end surface of the cover, that is, the end surface on the pen tip side, and a driving projection that protrudes in a direction opposite to the pen tip from the collar portion of the ink cartridge and engages with the driving recess is provided. Although the drive mechanism is constituted by the drive recess and the drive protrusion, an interlocking mechanism RR such as that provided in the writing instrument 10 described below with reference to FIG. 7 may be adopted. Since the writing instrument 10 has the same configuration as the writing instrument 1 of the above-described embodiment except for the points described below, the corresponding parts are denoted by the same names and reference numerals, and detailed description thereof is omitted. That is, the writing instrument 10 has a male screw 48 on the base end side of the body 4 constituting the writing instrument main body H, that is, the side opposite to the pen tip 5, and the female screw 38 provided on the front end side of the cover 3 and the body 4. The cover 3 is screwed onto the body 4 of the writing instrument main body H by screwing with the male screw 48. On the outer surface of the base end of the ink cartridge 2 covered with the cover 3, that is, the end opposite to the pen tip 5, a drive protrusion 29 extending to the side opposite to the pen tip 5 is provided. A driving concave portion 39 capable of engaging with the driving projection 29 is provided on the inner surface of the base end portion. The drive protrusion 29 and the drive recess 39 form an interlocking mechanism RR.

Here, the interlocking mechanism RR of the writing instrument 10 also acts in the same manner as the interlocking mechanism R of the writing instrument 1 of the above-described embodiment. That is, when the ink cartridge 2 and the cover 3 are attached to the writing instrument body H with the driving protrusion 29 and the driving recess 39 engaged with each other, the internal thread 38 of the cover 3 and the external thread of the body 4 of the writing instrument body H are attached. When a screwing operation force is applied to screw the screw 48, the screwing operation force is transmitted from the standing surface 39 a provided in the driving recess 39 to the driving projection 29, that is, from the cover 3 to the ink cartridge 2. And the female screw of the supply pipe 7 of the writing instrument body H are screwed together. In this way, the cover 3 is screwed to the body 4 and the ink cartridge 2 is screwed to the supply pipe 7. On the other hand, when the cover 3 is removed from the writing instrument main body H, a detachment operation force is applied to the cover 3 so that the male screw 31 of the cover 3 and the female screw 44 of the body 4 are rotated in a direction to be released. However, although the rising surface 39 a of the drive recess 39 is separated from the drive protrusion 29 and the cam surface 39 b of the drive recess 39 is in sliding contact with the tip of the drive protrusion 29, the detachment operation force is not transmitted to the ink cartridge 2. That is, only the cover 3 is removed from the body 4 of the writing instrument body H while keeping the ink cartridge 2 screwed to the supply pipe 7.

Therefore, the main effect of the configuration of the interlocking mechanism R of the writing instrument 1 of the embodiment can also be obtained by the configuration of the interlocking mechanism RR of the writing instrument 10.

Further, in the above-described embodiment, the writing instrument body is disposed between the body part in which the pen tip is supported at the tip part, the batting housed in the body part, and the batting and the ink cartridge. For example, a writing instrument integrally provided with a supply pipe on the ink cartridge side, a writing instrument main body provided with the body portion and the batting, the ink cartridge, and the batting and the ink cartridge The present invention may be applied to a writing instrument provided with separate supply pipes arranged between them.

And the positioning part between the said writing instrument main body and the said cover may be abbreviate | omitted, and you may set the number and installation location of a positioning part arbitrarily.

Other various modifications may be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1,10 ... Writing implement H ... Writing implement main body 2 ... Ink cartridge 3 ... Cover R, RR ... Interlocking mechanism 4 ... Body 5 ... Pen tip 6 ... Filling 7 ... Supply pipe

Claims

A writing instrument main body with a pen tip supported at the tip, an ink cartridge that can be screwed into the writing instrument main body and store ink therein, a cover that covers the ink cartridge and is screwed into the writing instrument main body, An interlocking mechanism for transmitting a screwing operation force to the ink cartridge when the cover is screwed to the writing instrument body, and screwing the ink cartridge to the writing instrument body. A writing instrument characterized in that it is configured so that a detaching operation force for detaching from the writing instrument body is not transmitted to the ink cartridge.
The interlocking mechanism engages the ink cartridge and the cover in a concavo-convex manner, and when the ink cartridge and the cover are screwed into the writing instrument body, the ink cartridge is screwed from the cover to the ink cartridge via the concavo-convex engaging portion. In order to disengage the cover from the writing instrument main body, the concave portion of the concave / convex engaging portion has a configuration for transmitting an operating force. The writing instrument according to claim 1, further comprising a cam surface that guides the ink cartridge and the cover away from each other without transmitting force.
The writing instrument main body includes a barrel portion with a tip end supporting a pen tip, a batting housed inside the barrel portion, and a supply pipe disposed between the batting and the ink cartridge. The writing instrument according to claim 1 or 2, wherein the ink cartridge is screwed onto the supply pipe, and the cover is screwed onto the body portion.
The writing instrument according to claim 1, 2, or 3, wherein a positioning portion is provided between the writing instrument body and the cover for positioning in a circumferential direction between the writing instrument body and the cover.
The positioning portion engages a locking projection provided continuously with a male thread provided on one of the writing instrument body and the cover and a locking recess provided by cutting out a female thread provided on the other. The writing instrument according to claim 4, wherein the writing instrument is formed.