JP3926315B2 - A batting change mechanism for batting writing instruments - Google Patents

Description

The present invention relates to a batting exchange mechanism for a batting type writing instrument, and more particularly, to a batting exchange mechanism using a batting container for accommodating batting for replacement of a batting type writing instrument that replenishes the batting with ink.

2. Description of the Related Art Conventionally, in a writing instrument, a batting type writing instrument in which a batting impregnated with ink in order to retain ink is accommodated in a shaft tube is often used.
In such a batting type writing instrument, it is already known to use screw fitting as a method for fixing the front shaft to the shaft cylinder in order to seal the batting.
In recent years, a so-called double-headed writing instrument, in which a pen tip is provided at both ends of one writing instrument, one for thick writing and the other for thin writing, is often used. Also in writing instruments, a method of fixing the tip shaft to the shaft cylinder by screw fitting has been conventionally performed.

In such a batting type writing instrument, when the ink is consumed, the ink is replenished and the writing instrument body is continuously reused.
In particular, as disclosed in Patent Document 1, as a method for replenishing ink in a double-headed writing instrument, a method is proposed in which the front shaft is pulled out from the shaft tube and ink is replenished to the batting accommodated in the shaft tube. Has been.
Japanese Utility Model Publication No. 6-86988 (see Claim for Utility Model Registration, FIG. 1 etc.)

However, according to the conventional method as described above, there is a problem in that when ink is put into the batting, the ink may be scattered and the surroundings may be stained.
Further, when removing the front shaft from the shaft cylinder, there is a problem in the operation of supplying ink, such as crushing the tip of the front shaft with a finger or requiring a large force to pull out the front shaft.

  As a countermeasure against the above problem, it is conceivable to weaken the fitting force between the front shaft and the shaft tube in order to make it easier to remove the front shaft. The problem that it becomes easy to leak arises.

  Therefore, in order to improve the sealing performance between the front shaft and the shaft tube, it is possible to easily remove the front shaft from the shaft tube even if the tightening margin of the seal portion is increased and the fitting is strengthened. It is desired.

The present invention has been made in view of the above-described conventional problems, and improves the sealing performance between the front shaft and the shaft tube of the batting type writing instrument with a simple structure, and securely attaches the front shaft and the shaft tube. It is possible to easily remove the tip shaft from the shaft tube, and to replace the batting in the shaft tube with a cotton pad impregnated with ink and to replenish the ink without polluting the surroundings. The purpose is to provide a batting change mechanism .

The present invention relates to a batting replacement in which a batting type writing instrument in which a housing portion for housing batting impregnated with ink is formed in a shaft cylinder, and a batting device provided with a main body and a lid portion for housing a batting for replacement therein. a mechanism, the opening of the receiving portion is formed on one end side of the shaft tube, previously axis pen core is provided is screwed attached to the opening of the housing portion, said front barrel, the housing part A plurality of concave or convex engaging portions are formed in the circumferential direction on the front end portion of the pen tip side from the threaded portion, and covers the pen core mounting portion of the tip shaft and the pen tip side front portion. A cap that is detachably fitted to the front shaft, and that is located behind the plurality of concave or convex engaging portions of the front shaft and between the front portion and the one end portion of the shaft tube from the threaded portion. a batting type writing tool sealed, to one end of the body or lid, engages with the engaging portion of said front barrel The engagement portion of the convex or concave is a combination of a batting container forming the insertable openings or recesses without interfering with pen core mounting portion of the pen tip and front barrel is, of the batting container The engagement portion is engaged with the engagement portion of the tip shaft of the batting type writing instrument to perform tightening or loosening operation of the screw engagement between the tip shaft and the opening of the shaft tube. It is a batting change mechanism for batting type writing instruments .

In addition, the present invention is a combination of a batting type writing instrument in which a housing portion for housing a cotton pad impregnated with ink is formed inside the shaft cylinder, and a batting container provided with a main body and a lid for housing a replacement batting inside. In the batting replacement mechanism, an opening portion of the housing portion is formed on one end side of the shaft tube, and a tip shaft on which a pen core is provided is screwed and attached to the opening portion of the housing portion. A plurality of concave or convex engaging portions are formed in the circumferential direction on the front surface portion on the pen tip side from the screwing portion with the housing portion, and the pen core mounting portion of the tip shaft and the pen tip side front surface portion are A cap that covers and is detachably fitted to the front shaft, and seals between the outer periphery of the pen core mounting portion and the inner wall of the cap in front of the plurality of concave or convex engaging portions of the front shaft And the engagement part of the tip shaft on one end of the main body or the lid part. The batting is formed by a combination with a batting container in which an engaging or convex engaging portion to be engaged forms an opening or a recess that can be inserted without interfering with the pen nib and the pen core mounting portion of the tip shaft. The engagement portion of the container is engaged with the engagement portion of the front shaft of the batting type writing instrument, and the screwing between the front shaft and the opening portion of the shaft tube is tightened or loosened. This is a batting change mechanism for a batting type writing instrument .
In the present invention, the batting container can be inserted so that the pen core mounting portion of the front shaft does not interfere within the range excluding the convex or concave engaging portion engaged with the engaging portion of the front shaft. It is preferable to provide a pen tip escape portion having a large space.

As described above, according to the batting change mechanism for the batting type writing instrument of the present invention, the opening portion of the housing portion is formed on one end side of the shaft tube, and the tip shaft on which the pen core is provided is the opening of the housing portion. is screwed attached to the parts, the front barrel, the engaging portion of the plurality of concave or convex to the front portion of the pen tip side of the engagement portion be formed in a circumferential direction of said housing portion, said destination A cap that covers the pen core mounting portion of the shaft and the pen tip side front surface portion and is detachably fitted to the front shaft; and is screwed behind and screwed into the plurality of concave or convex engaging portions of the front shaft. A batting type writing instrument that seals between the front part and one end part of the shaft cylinder from the joint part, and a convex or concave engagement that is engaged with the engaging part of the front shaft at one end part of the main body or the lid part. The joint forms an opening or recess that can be inserted without interfering with the pen nib and the pen core mounting part of the tip shaft. Examples which consist of a combination of the batting container, by engaging the engaging portion of the filling container with the engagement portion of the front barrel of the batting type writing instrument, with the front barrel with a filling container The screwing with the opening is tightened or the loosening operation is performed.
Therefore , the tip shaft can be easily attached to and detached from the shaft tube without crushing the tip portion of the tip shaft and the pen tip .
In addition, when force is required for attaching and detaching the front shaft, the tip portion is not directly operated with bare hands, so that it is not soiled, and the ink is easily replenished by replacing the cotton pad impregnated with ink. be able to.
In the batting type writing instrument of the present invention, the front shaft and the one end portion of the shaft cylinder are sealed behind the plurality of concave or convex engaging portions of the front shaft and between the front portion and the one end portion of the shaft cylinder. The sealing performance of the shaft tube can be improved.

Further, using a batting container that accommodates the batting, a concave or convex engaging portion that is engaged with the engaging portion of the front shaft is provided at one end of the main body or the lid of the batting container. Thus, it is possible to reliably prepare when replacing the batting without specially providing a jig member.
In the present invention, instead of sealing the space between the front portion and one end portion of the shaft cylinder behind the plurality of concave or convex engaging portions of the front shaft and the threaded portion, the front shaft It is possible to seal between the outer peripheral portion of the pen core attaching portion and the cap inner wall portion in front of the plurality of concave or convex engaging portions.

In addition, a pen tip relief portion having a space that can be inserted so as not to interfere with the pen core mounting portion of the tip shaft is provided within a range excluding the convex or concave engaging portion that is engaged with the tip shaft engaging portion. As a result, the tip shaft can be attached and detached without damaging the pen tip.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1-6 is an example of the form which implements this invention, In the figure, the part which attached | subjected the code | symbol same as a figure represents the same thing.

  FIG. 1 is a partial cross-sectional view showing the entire configuration of a double-headed batting type writing instrument that houses a filling pad for filling by a filling pad container (filling container) according to an embodiment of the present invention, and FIG. 3 is a detailed partial cross-sectional view showing the configuration near the thick side end of the axial tube of the writing instrument, FIG. 3 is a detailed partial cross-sectional view showing the configuration near the narrow side end of the axial tube of the batting type writing instrument, and FIG. FIG. 5 is a schematic exploded view showing the structure of the refilling batting container according to the present embodiment, and FIG. 6 is an explanatory view showing the attaching and detaching operation of the shaft cylinder and the front shaft of the batting type writing instrument. It is.

  As shown in FIG. 1, the batting type writing instrument is a double-headed batting type writing instrument 1 having a pen tip at both ends, and having an accommodating portion 4 in which a batting 3 impregnated with ink is accommodated inside the shaft tube 2. .

  The shaft cylinder 2 has a substantially tapered outer shape, and a front shaft 5 is attached to one thick side end portion 2a, and a cutlery 6 is attached to the other thin side end portion 2b. A thick-side pen lead 7 is attached to the front shaft 5, and a thin-side pen lead 8 is attached to the cutlery 6. The thick-side pen core 7 and the thin-side pen core 8 are respectively inserted and inserted into both ends of the batting 3, and the ink of the batting 3 penetrates into the pen cores 7 and 8 at both ends and can be written on either pen core. It has become.

  As shown in FIG. 2, a thick-side cap 10 is detachably attached to the thick-side end portion 2a so as to cover the thick-side outer peripheral portion 2c and the pen core side.

Further, a screw portion 2d is formed on the inner peripheral portion on the opening side of the thick side end portion 2a, while a screw portion 5a is formed on the outer periphery of the front shaft 5, and the screw portions 2d and 5a are screwed. As a result, the front shaft 5 is attached to the thick side end 2a.
The front shaft 5 is provided with a sealing material 14 near the tip of the thick side end 2a of the shaft side fitting portion 5b to be fitted to the thick side end 2a so that the front shaft 5 and the thick side end 2a are fitted. The part is sealed.

  As shown in FIGS. 2 and 4, the tip shaft 5 has a pen tip mounting portion 5d formed in a cylindrical shape along the axial direction in which a pen tip side front surface portion 5c is provided with a thick pen tip 7 at a substantially center. The pen core mounting portion 5d is formed in a substantially conical shape toward the rear from the base portion, and four concave engaging portions 5f are formed on the conical front surface portion 5e in the circumferential direction at approximately four equal intervals. . The concave engaging portion 5f has a substantially rectangular cross section.

  The thick side cap 10 has a seal portion 10b projecting and formed at a position close to the pen tip of the inner wall portion where the tip of the pen core 7 is accommodated, and is fitted to the outer peripheral portion of the pen core mounting portion 5d. The pen core 7 side inside 10 is sealed.

  On the inner side of the thick side cap 10 near the opening side end portion 10a, a click portion 10c is formed to protrude inward along the circumference. The click part 10c is pressure-bonded to the click-side outer peripheral part 2g of the thick-side end part 2a facing the click part 10c, and the thick-side cap 10 is held. Reference numeral 10d in the figure is a clip.

  As shown in FIG. 3, the narrow side end portion 2b is formed in a substantially cylindrical shape, and a thin side cap 11 is detachably mounted so as to cover the distal end side outer peripheral portion 2h and the pen core side. The sealing structure by the narrow side cap 11 is such that the inside of the cap is formed by the fitting seal 13 by fitting between the distal end side outer peripheral portion 2h of the narrow side end portion 2b and the narrow side inner peripheral portion 11a inside the narrow side cap 11. The pen core 8 side is sealed.

On the inner side of the narrow side cap 11 near the opening side end portion 11b, a click portion 11c is formed so as to protrude along the circumference. The click part 11c is pressure-bonded to the narrow side outer peripheral part 2i of the narrow side end part 2b facing the click part 11c to hold the narrow side cap 11.
A cuticle 6 having a substantially cylindrical shape is fitted inside the narrow side end 2b, and a narrow pen core 8 is provided inside the cutlery 6.
The clipper 6 is press-fitted and fixed to the shaft cylinder 2.

Here, the schematic structure of the batting type writing instrument 1 main body is shown in FIGS.
The batting type writing instrument 1 in the figure is in a state in which the thick side cap 10 and the thin side cap 11 are removed, and the batting 3 is replaced by removing the front shaft 5 from the shaft tube 2 and from the thick side end 2a side. Do.

When the batting 3 is replaced, the refilling batting 30 is accommodated in a cylindrical refilling batting container 31 as shown in FIG.
The refilling batting container 31 includes a case portion 33 having a housing portion 32 and a lid portion 34 for housing the refilling batting 30.

The case portion 33 has a cylindrical shape, and an opening portion 32a of the accommodating portion 32 is formed at one end, and the inner space is separated from the accommodating portion 32 and the pen tip relief portion 37 by the partition portion 35 formed inside. It is divided into and.
On the case bottom 33b, rib-shaped convex portions that become convex engaging portions 36 are provided at four positions facing the axial center direction and outward in positions facing the concave engaging portions 5f formed on the front shaft 5. An opening 37 a of the pen tip relief part (pen core relief part) 37 is formed so as to protrude in a range excluding the convex engagement part 36. In other words, the case bottom 33 b also serves as a jig for attaching and detaching the front shaft 5 to and from the shaft tube 2.

The accommodating portion 32 is configured such that a space of the accommodating portion 32 formed in a state where the lid portion 34 is attached to the case portion 33 forms a space in which the refilling batting 30 can be accommodated.
The pen tip relief portion 37 can be arranged without the pen core portion on the front shaft 5 side interfering with the partition wall portion 35 in a state where the convex engagement portion 36 is fitted to the concave engagement portion 5 f of the front shaft 5. It is formed as follows.
The lid portion 34 has a shape in which a hollow portion 34a is formed inside, one end portion 34b side is opened, and a rear end portion 34d is closed.

Next, attachment / detachment of the front shaft 5 and the shaft cylinder 2 in the batting type writing instrument 1 will be described with reference to FIG.
As shown in FIG. 6, the batting type writing instrument 1 is in a state where the front shaft 5 and the shaft tube 2 are assembled. The front shaft 5 and the shaft cylinder 2 are screwed together.
When removing the tip shaft 5 from the shaft tube 2 from this state, it is necessary to loosen the screw portions 5a and 2d.
First, the case bottom 33b and the front shaft 5 are opposed to each other, the thick pen core 7 side is inserted into the opening 37a, and the convex engagement part 36 and the concave engagement part 5f of the case bottom 33b are fitted together.

At this time, since the thick-side pen core 7 is disposed in the pen tip escape portion 37, the tip shaft 5 can be attached to the case bottom 33b without any interference.
Then, while holding the case portion 33 and pressing the case portion 33 against the front shaft 5, the case portion 33 is rotated in a direction in which the screw portion (not shown) of the front shaft 5 is loosened (for example, counterclockwise). Let

When the screw portion is loosened, the case portion 33 is removed from the front shaft 5, and thereafter, the front shaft 5 is simply rotated with a bare hand and removed from the shaft tube 2.
In this way, the batting 3 can be taken out from the shaft cylinder 2. The used filling 3 is taken out from the shaft cylinder 2, a new filling pad 30 is put in, the tip shaft 5 is attached, and the filling pad 30 is accommodated in the shaft cylinder 2. The used batting 3 is disposed in the replenishing batting container 31 in which the refilling batting 30 was accommodated after the operation is completed.

Then, the case bottom 33b is again pressed against the front shaft 5, and the convex engagement portion 36 and the concave engagement portion 5f of the case bottom 33b are fitted together.
Then, in a state where the case portion 33 is gripped and the case portion 33 is pressed against the front shaft 5, the case portion 33 is rotated in a direction in which the screw portion of the front shaft 5 is tightened (for example, a clockwise direction). 5 and the shaft cylinder 2 are further tightened to ensure a screwed state. In this way, the housing part 4 in which the refilling batting 30 is housed can be reliably sealed.

Since it comprised as mentioned above, according to this embodiment, a jig | tool is comprised with simple structure reliably using the case part 33 of the filling cotton container 31 which accommodates the filling cotton 30 for replenishment, and it is reliable. The front shaft 5 and the shaft tube 2 can be easily and reliably attached and detached, and the sealing performance between the front shaft 5 and the shaft tube 2 can be improved. Moreover, when the work for attaching and detaching the front shaft 5 is performed, the work is performed with the case portion 33, so that the work can be reliably performed without getting the hands dirty.
Further, since the ink is replenished by exchanging the padding impregnated with the ink, it is not necessary to supply the ink directly, so that the ink can be easily replenished without staining the surroundings.

  In the embodiment, a screw portion 5 a is formed on the outer periphery of the mounting portion of the tip shaft 5, and a screw portion 2 d corresponding to the mounting portion is formed on the inner peripheral portion of the opening of the thick side end portion 2 a of the shaft cylinder 2. Since the front shaft 5 can be mounted with the shaft cylinder 2 facing outward with a simple configuration, the pen tip portion can be reliably sealed by the thick side cap (cap) 10.

  In addition, the seal structure of the pen tip portion by the thick side cap 10 of the present embodiment is formed by projecting the seal portion 10b at a position close to the pen tip of the inner wall portion in which the tip of the pen lead 7 is stored, By fitting with the outer peripheral portion of 5d, the pen core 7 side inside the thick cap 10 is sealed, but the present invention is not limited to this, for example, as other embodiments, As shown in FIG. 7, the sealing structure by the thick cap 110 has a thick outer periphery 2 c of the thick end 2 a formed in a tapered shape and an inner circle of the opening end 10 a of the thick cap 110. A seal portion 110b may be formed so as to protrude inward in the circumferential direction, and the tip end side of the front shaft 5 inside the thick side cap 110 may be sealed.

  According to such a configuration, the seal portion 110b of the thick side cap 110 is brought into contact with the outer peripheral portion of the shaft tube 2 for sealing, so that the thick side cap 110 does not contact the front shaft 5 and the user Even when the thick-side cap 110 is unnecessarily rotated with respect to the shaft tube 2, the screwed state between the front shaft 5 and the shaft tube 2 is not loosened, and ink leakage can be prevented. There is an excellent effect.

Next, a second embodiment will be described with reference to the drawings.
FIGS. 8-11 shows an example of this embodiment, FIG. 8 is explanatory drawing which shows the structure of the front axis | shaft and screwing fastening apparatus of the batting type writing instrument which concerns on the 2nd Embodiment of this invention. 9 is a view taken in the direction of arrow A in FIG. 8, FIG. 10 is a view taken in the direction of arrow BB in FIG. 8, and FIG. 11 is a plan view showing the overall structure of the screw tightening member.

  In the second embodiment, as shown in FIG. 8, a batting (not shown) impregnated with ink is accommodated in the shaft tube 202, and a tip shaft 205 having a pen tip at one end of the shaft tube 202. In the batting type writing instrument 200 to which is attached, when the tip shaft 205 is removed from the shaft cylinder 202 at the time of ink replenishment or batting replacement, it is attached and detached using a screwing tightening member 210.

  As shown in FIG. 8, the front shaft 205 includes a shaft-cylinder-side rear end portion (not shown) that is screwed into the one end portion of the shaft tube 202, and an outer side from the end portion of the shaft tube 202. A pen tip side front face portion 206 that is exposed and attached. A male screw portion is formed at the rear end portion on the shaft tube side, and a female screw portion formed on the inner side of the shaft tube 202 and the male screw portion are screwed together to be fastened.

The pen-tip-side front surface portion 206 is formed with a substantially tapered tip portion 206a tapered toward the tip direction on the tip side thereof, and a substantially cylindrical tip having a seal portion 206b formed continuously with the tip portion 206a. A shaft body portion 206c is formed, and a flange portion 206d is formed at the end of the shaft body portion 206c so as to abut against the shaft tube 202 for positioning.

A pen core 207 is attached to the distal end portion 206a.
As shown in FIG. 8, the flange portion 206 d protrudes continuously in the circumferential direction with a dimension larger than the outer diameter of the front shaft body portion 206 c, and the front shaft 205 is screwed and fastened to the shaft cylinder 202. At this time, a stopper function is provided which contacts the end of the shaft cylinder 202 to prevent the threaded portion from entering. Further, the outer peripheral portion of the flange portion 206d is flat at a position equally spaced by four along the circumferential direction of the outer peripheral portion (at every 90 ° position along the circumference), as shown in FIG. Concave engagement portions 206e that are recessed in a substantially rectangular shape on the inside as viewed are formed at four locations.

Next, the configuration of the screw tightening member 210 will be described.
As shown in FIGS. 8, 10, and 11, the screw tightening member 210 is formed with a front shaft engaging portion 211 into which a front shaft body portion 206 c can be inserted at one end portion, while the other end portion. A grip portion 212 is integrally formed for gripping.

  The front shaft engaging portion 211 is formed with a substantially circular through hole 211a similar to the front shaft 205 in a plan view shown in FIG. The inner peripheral edge of the through-hole 211a is inwardly arranged in a plan view at a position corresponding to the concave engagement portion 206e formed in the flange portion 206d of the front shaft 205 along the inner peripheral direction. Opposite convex engaging portions 211b are provided at four positions in a shape substantially similar to the concave engaging portion.

Further, as shown in FIG. 8, the front shaft engaging portion 211 has a substantially rectangular cross section in a side view, is formed thinner than the grip portion 212, and is formed at a substantially central portion in the thickness direction. A convex engagement portion 211b is formed.
A concave portion 211c is formed in a portion of the front shaft engaging portion 211 facing the flange portion 206d so as to be recessed in a shape substantially similar to the outer shape in plan view of the flange portion 206d, and guides the attachment to the flange portion 206d. It is designed to be positioned.

  As shown in FIGS. 8 and 11, the grip portion 212 has a substantially rectangular cross section and has a taper shape that is slightly tapered from the substantially central portion in the longitudinal direction toward the front shaft engaging portion 211. Has a hollow structure.

Next, the operation of the batting type writing instrument 200 and the screw tightening member 210 of this embodiment will be described.
As shown in FIG. 8, the batting type writing instrument 200 is in a state in which the front shaft 205 and the shaft tube 202 are assembled. The front shaft 205 and the shaft cylinder 202 are screwed together.
When the tip shaft 205 is removed from the shaft tube 202 from this state, it is necessary to loosen the threaded portion.

First, the front shaft engagement portion 211 of the screw tightening member 210 and the front shaft 205 are made to face each other, and the front shaft 205 is inserted into the through hole 211a from the pen core 207 side, so that the convex engagement of the front shaft engagement portion 211 is achieved. The mating part 211b and the concave engaging part 206e of the flange part 206d are fitted together.
Then, in a state where the grip portion 212 of the screw tightening member 210 is gripped and the grip portion 212 is pressed against the front shaft 205, the screw portion (not shown) of the front shaft 205 is loosened (for example, counterclockwise) Direction), the screw fitting member 210 is rotated.

  When the threaded portion of the front shaft 205 is loosened, the front shaft engaging portion 211 is removed from the front shaft 205, and thereafter, the front shaft 205 is simply turned with a bare hand and removed from the shaft tube 202. Thus, the batting can be taken out from the shaft cylinder 202. Then, the used batting is taken out from the shaft cylinder 202, a new filling batting is inserted, the front shaft 205 is mounted, and the filling batting is accommodated in the shaft cylinder 202.

  Then, the front shaft 205 is again inserted into the front shaft engaging portion 211 of the screw tightening member 210, and the convex engaging portion 211b of the front shaft engaging portion 211 and the concave engaging portion 206e of the flange portion 206d are connected. Fit together.

  Then, in a state where the gripping portion 212 is gripped and the front shaft engaging portion 211 is pressed against the flange portion 206d of the front shaft 205, the screw portion of the front shaft 205 is tightened in a screwing direction (for example, a clockwise direction). The screw member 210 is rotated to further tighten the front shaft 205 and the shaft tube 202 to ensure the screwed state. In this way, it is possible to reliably seal the accommodating portion in which the filling pad is accommodated.

Since it is configured as described above, according to the second embodiment, since so as to attach and detach the front barrel 205 by screwing the tightening member 210, it is possible to reliably removable, front barrel 205 and the barrel The sealing property with 202 can be improved.
In addition, when the work for attaching and detaching the front shaft 205 is performed, since the work is performed with the screw-fastening member 210, the work can be reliably performed without dirtying the hands.

  In addition, according to the present embodiment, since the screw tightening member 210 is configured separately, the shape of the screw tightening member is not limited to the shape described in the present embodiment. It can comprise in a free shape except the part engaged with. Therefore, it is possible to realize a shape that corresponds to the user and that is excellent in usability.

  In the present embodiment, the concave engagement portion 206e is formed on the outer peripheral side portion of the collar portion 206d of the pen tip side front surface portion 206, and the convex engagement portion 211b enters the side portion of the collar portion 206d. However, the present invention is not limited to this. For example, as in the first embodiment, the screw tightening that is inserted from the front end side of the pen-tip-side front surface portion 206. The engaging portion may be configured such that the engaging portion of the fitting member is engaged on the front side of the pen tip side front portion 206.

  Furthermore, the configuration of the present invention is not limited to the illustrated examples described above, and various modifications can be made without departing from the scope of the present invention.

It is a fragmentary sectional view which shows the whole structure of the double-headed batting type writing instrument which accommodates the batting for replenishment with the batting container which concerns on embodiment of this invention. It is a detailed fragmentary sectional view which shows the structure of the thick side edge part vicinity of the axial cylinder of the said batting type writing instrument. It is a detailed fragmentary sectional view which shows the structure of the narrow side edge part vicinity of the axial cylinder of the said batting type writing instrument. It is a schematic exploded view which shows the structure of the said batting type writing instrument. It is a schematic exploded view which shows the structure of the refilling batting container which concerns on this embodiment. It is explanatory drawing which shows the attachment or detachment operation of the axial cylinder and tip axis | shaft of the said batting type writing instrument. It is a detailed fragmentary sectional view which shows the structure of the thick side edge part vicinity of the axial cylinder of the batting type writing instrument of another Example. It is explanatory drawing which shows the structure of the front shaft and screwing fastening apparatus of the batting type | formula writing instrument which concerns on the 2nd Embodiment of this invention. It is A arrow directional view of FIG. It is a BB cross-sectional arrow view of FIG. It is a top view which shows the whole structure of a screwing fastening member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,200 Filling-type writing instrument 2,202 Shaft cylinder 2a Thick side edge part 2b Thin side edge part 2d Screw part 3 Filling pad 4 Storage part 5,205 Lead shaft 5a Screw part 5d Pen core attaching part 5f Concave engaging part 6 Cuticle 7 Thick side pen core 8 Thin side pen core 10 Thick side cap 11 Narrow side cap 12, 13 Fitting seal 14 Sealing material 30 Filling pad 31 Filling pad container (batting pad container)
32 receiving portion 33 case portion 33b case bottom portion 34 lid portion 35 partition wall portion 36 convex engagement portion 37 pen tip relief portion 37a pen tip relief portion opening 206 pen tip side front surface portion 206a collar portion 206e concave engagement portion 210 screw Fastening member 211 Lead shaft engaging portion 211a Through hole 211b Convex engaging portion 212 Gripping portion

Claims (3)

A batting change mechanism that combines a batting type writing instrument in which an accommodating portion for accommodating batting impregnated with ink is formed in a shaft cylinder, and a batting device provided with a main body and a lid for accommodating an interchanging batting inside. ,
An opening portion of the housing portion is formed on one end side of the shaft cylinder, and a tip shaft on which a pen core is provided is screwed to the opening portion of the housing portion, and the tip shaft is screwed with the housing portion. A plurality of concave or convex engaging portions are formed in the circumferential direction on the front side of the pen tip side, covering the pen core mounting portion of the tip shaft and the pen tip side front portion, and detachable from the tip shaft A batting type writing instrument provided with a cap fitted on the front shaft and sealed between a plurality of concave or convex engaging portions on the front shaft and a front portion from the screwed portion and one end portion of the shaft tube When,
An opening into which a convex or concave engaging portion engaged with the engaging portion of the tip shaft can be inserted into one end portion of the main body or the lid portion without interfering with the pen tip and the pen core mounting portion of the tip shaft. It consists of a combination with a batting container in which a part or a recess is formed,
By engaging the engaging portion of the batting container with the engaging portion of the front shaft of the batting type writing instrument, the screwing between the front shaft and the opening of the shaft tube is tightened or loosened. A batting change mechanism for a batting type writing instrument. A batting change mechanism that combines a batting type writing instrument in which an accommodating portion for accommodating batting impregnated with ink is formed in a shaft cylinder, and a batting device provided with a main body and a lid for accommodating an interchanging batting inside. ,
An opening portion of the housing portion is formed on one end side of the shaft cylinder, and a tip shaft on which a pen core is provided is screwed to the opening portion of the housing portion, and the tip shaft is screwed with the housing portion. A plurality of concave or convex engaging portions are formed in the circumferential direction on the front side of the pen tip side, covering the pen core mounting portion of the tip shaft and the pen tip side front portion, and detachable from the tip shaft And a batting type writing instrument that seals between the outer periphery of the pen core mounting portion and the inner wall of the cap in front of the plurality of concave or convex engaging portions of the front shaft,
An opening into which a convex or concave engaging portion engaged with the engaging portion of the tip shaft can be inserted into one end portion of the main body or the lid portion without interfering with the pen tip and the pen core mounting portion of the tip shaft. It consists of a combination with a batting container in which a part or a recess is formed,
By engaging the engaging portion of the batting container with the engaging portion of the front shaft of the batting type writing instrument, the screwing between the front shaft and the opening of the shaft tube is tightened or loosened. A batting change mechanism for a batting type writing instrument. The batting container has a pen tip relief that has a space that can be inserted so that the pen core mounting portion of the front shaft does not interfere with the engagement portion of the front shaft, except for the convex or concave engaging portion engaged with the front shaft. The batting changing mechanism for the batting type writing instrument according to claim 1, wherein a portion is provided.

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