JP2003118290A - Applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an applicator constituted so that a plug member such as a front plug, a tail plug or the like is not detached at the time of general use but can be easily detached at the time of filling and replacement of a coating liquid. SOLUTION: In the applicator 1, the tail plug 3 is attached to one end of a main body cylinder 4 by a mounting keeping structure part 13 and fixed strongly. Further, a wavy inclined part 15 and a locking part 11 are respectively provided to the constricted part 14 in the main body cylinder 4 and the end of the tail cock 3. When the tail plug 3 is ready to be axially pulled out of the main body cylinder 4, considerably large pulling force is required axially but, if the tail plug 3 is twisted with respect to the main body cylinder 4, repulsive force is generated between the inclined part 15 and the locking part 11 by the twisting of the tail plug 3 and exceeds the locking force due to the mounting keeping structure part 13 and the main body cylinder 4 is axially pushed out and the tail plug 3 is easily detached from the main body cylinder 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an applicator such as a marker pen and a ballpoint pen, and in particular, during normal use, the stopper member attached to the main body cylinder containing the application liquid does not come off, The present invention relates to an applicator whose plug member can be easily removed at the time of filling and replacement.

[0002]

2. Description of the Related Art An applicator 100 such as a marker pen or a ball-point pen which has been generally used conventionally has a hollow cylindrical main body 101 as shown in FIG. 11, in which a coating liquid 102 is contained. There is. A front plug 104 is attached to the tip of the main body cylinder 101, and a tail plug 103 is attached to the rear end of the main barrel 101 to integrate them. When the plug members such as the front plug 104 and the tail plug 103 described above fall out from the main body cylinder 101, the coating liquid 102 contained in the main body cylinder 101 may leak out. If a child mistakenly swallows it, it may cause an accident of choking. Therefore, plug members such as the front plug 104 and the tail plug need to be firmly attached to the main body cylinder 101. Therefore, the conventional applicator 100 includes the main body cylinder 101 and the plug member 10.
3, 104 are adhered with an adhesive agent, or the main body cylinder 101 and the plug members 103, 104 are provided with a fitting structure 105, and the both are fitted to each other.
03 and 104 were firmly fixed.

[0003]

Most of the conventional applicators 100 such as marker pens and ballpoint pens are discarded when the coating liquid 102 contained in the main body cylinder 101 is used up. However, in many of the applicators 100, a wide variety of constituent members such as the main body cylinder 101 can be reused, and such reuse is desired from the viewpoint of effective use of resources. Therefore, in order to meet this demand, the main body tube 1 of the applicator 100
An applicator 100 that fills and replaces the coating liquid 102 contained in 01 is eagerly desired.

An applicator 1 which has been generally used since ancient times
00 is of a type in which the main body cylinder 101 and the plug members 103 and 104 are fixed by an adhesive or a fitting structure 105, and therefore is easy to assemble and convenient for mass production. However, in the conventional applicator 100, the main body cylinder 101 and the plug members 103 and 104 are firmly fixed by the adhesive or the fitting structure 105.
Therefore, there is a problem that the plug members 103 and 104 cannot be easily removed and it is difficult to fill and replace the coating liquid 102 contained in the main body cylinder 101.

Further, the main body cylinder 101 of the applicator 100 and the plug members 103, 104 are provided with a screw structure so that the plug members 103, 1
If 04 is attached to the main body cylinder 101, the main body cylinder 1
Although the coating liquid 102 contained in 01 can be relatively easily filled and replaced, the coating tool 100 is used when the coating member 102 is manufactured.
Since it is necessary to screw 3, 104 into the main body tube 101, it is not suitable for mass production and there is a problem that the cost is high.

Therefore, in the present invention, the plug member does not come off from the main body cylinder of the applicator when the applicator is used, and the plug member can be easily removed from the main body shaft when the coating liquid is filled or replaced. Therefore, the object was to provide an applicator that is easy to manufacture.

[0007]

In order to solve the above-mentioned problems, the invention according to claim 1 provides a main body cylinder for accommodating a coating liquid and at least one of a front stopper and a tail stopper. An applicator having a member, wherein a plug member is attached to the main body tube, and further, an attachment maintaining structure portion for maintaining a state in which the plug member is attached to the main body tube is provided, in at least one of the main body tube and the plug member. An inclined portion is provided, and an engaging portion that engages with the inclined portion is provided on the other side, and by twisting the plug member with respect to the main body cylinder, the plug member is pushed out in the axial direction. It is an applicator.

The attachment maintaining structure provided in the applicator of the present invention maintains the attachment state of the plug member to the main body tube, and prevents the plug member from falling off the main body tube during use of the applicator. It can be prevented.

In the applicator of the present invention, when the stopper member is twisted with respect to the main body cylinder, the inclined portion provided on at least one of the main body portion and the stopper member is provided on the other and the inclined portion is provided. Pushing the engaging part in the axial direction,
As a result, the plug member is pushed out in the axial direction. In the applicator of the present invention, as described above, since the applicator can remove the plug member from the main body tube simply by twisting the plug member with respect to the main body tube, it is possible to easily fill and replace the coating liquid in the main body tube. . on the other hand,
Since the applicator of the present invention has the attachment maintaining structure, when the applicator is used, the main body cylinder and the plug member do not come off and the integrated state is maintained.

The invention according to claim 2 is characterized in that an inner cylinder is further provided in the main body cylinder, and the coating liquid is accommodated in the inner cylinder and then stored in the main body cylinder. The described applicator.

In the applicator of the present invention, the coating liquid is contained in an inner cylinder separately provided inside the main body cylinder. Therefore, for filling and exchanging the coating liquid, the inner cylinder is taken out of the main body cylinder and filled with the coating liquid, or the inner cylinder incorporated in the main body cylinder is replaced with a separate inner cylinder sufficiently containing the coating liquid. The coating liquid can be refilled simply by It is also possible to adopt a configuration in which the coating liquid is dripped into the inner cylinder.

The invention according to claim 3 is characterized in that the applicator is a marker pen or a ball-point pen.
Or the applicator described in 2.

The invention according to claim 1 or 2 may be any applicator having the above-mentioned structure, but a marker pen or a ball-point pen is particularly suitable.

According to a fourth aspect of the present invention, the attachment maintaining structure portion engages with a protrusion provided on an inner periphery or an outer periphery of at least one of the main body cylinder and the plug member, and the protrusion provided on the other. The applicator according to any one of claims 1 to 3, wherein the applicator is configured by a protrusion engaging portion that is formed.

The mounting maintaining structure is composed of the protrusion and a protrusion engaging portion that engages with the protrusion. By engaging the protrusion and the protrusion engaging portion, the plug member is firmly attached to the main body cylinder. It is installed. Further, since the attachment maintaining structure of the present invention has a simple structure, the applicator of the present invention can be easily manufactured.

According to a fifth aspect of the present invention, the mounting maintaining structure portion is provided on an annular protrusion provided on the entire circumference of at least one of the main body cylinder and the plug member, and on the other of the main body cylinder and the plug member. The applicator according to any one of claims 1 to 4, wherein the applicator is configured by a protrusion or a recess that engages with the protrusion.

According to the attachment maintaining structure of the present invention, the attachment of the main body cylinder to the plug member becomes firm. Further, since the mounting maintaining structure portion has a simple structure, it is easy to manufacture and the manufacturing cost can be reduced.

According to a sixth aspect of the present invention, the attachment maintaining structure is provided with an annular protrusion provided on the entire circumference of at least one of the main body cylinder and the plug member, and the other of the main body cylinder and the plug member. The applicator according to any one of claims 1 to 4, wherein the applicator is configured by an annular protrusion that engages with the protrusion.

According to this structure, the main body cylinder can be easily attached to the plug member. Further, since the plug member and the main body cylinder are engaged over the entire circumference, during normal use,
The plug member does not easily come off the main body cylinder. Further, since the mounting maintaining structure section has a simple structure and is easy to manufacture, the manufacturing cost can be reduced.

The invention according to claim 7 is characterized in that a part or all of the outer peripheral portion is inserted into the main body cylinder while pressing the inner surface of the main body cylinder, and the pressed portion functions as a mounting maintaining structure portion. The applicator according to any one of claims 1 to 6.

According to the attachment maintaining structure of the present invention, the state in which the plug member is attached to the main body cylinder can be maintained with an extremely simple structure.

According to an eighth aspect of the present invention, the mounting maintaining structure has an engaging portion for engaging the main body cylinder and the plug member with each other, and the main body cylinder and the plug member have a constant engagement length. The engagement, the axial length of the inclined portion is longer than the engagement length, and the engagement of the engaging portion is released by pushing the plug member in the axial direction. 7. The applicator according to any one of 7.

In the applicator of the present invention, the attachment maintaining structure includes an engaging portion for engaging the main body cylinder and the plug member with each other. Therefore, according to the attachment maintaining structure of the present invention, the connection between the plug member and the main body cylinder becomes strong. In addition, in the applicator of the present invention, the length of the inclined portion in the axial direction is longer than the engagement length, and the engagement of the engagement portion is released by pushing the plug member in the axial direction. Therefore, the applicator of the present invention can easily release the engaging portion.

The invention according to claim 9 is the applicator according to any one of claims 1 to 8, characterized in that the inclined portion has a corrugated shape.

In the applicator of the present invention, since the inclined portion provided on at least one of the main body portion and the plug member has a corrugated shape, the plug member can be smoothly rotated with respect to the main body cylinder.
Further, when the plug member is twisted with respect to the main body cylinder, the inclined portion is pushed out in the axial direction by the engaging portion that engages with the inclined portion, so that the plug member can be easily removed from the main body cylinder. further,
Since the inclined portion has a corrugated shape, the axial displacement of the engaging portion that engages with the inclined portion does not change rapidly, and the separation between the plug member and the main body cylinder is gentle. The engaging portion may have any shape such as a corrugated shape or a protruding shape.

According to a tenth aspect of the present invention, a narrowed portion having a narrowed inner diameter is provided in the vicinity of an end portion of the main body cylinder, and an inclined portion is provided at a portion of the narrowed portion facing the main body shaft end side. The applicator according to any one of claims 1 to 9, wherein

In the applicator of the present invention, an inclined portion is provided at a portion of the narrowed portion of the main body tube facing the main body shaft end side, and an engaging portion is provided on the plug member attached to the main body cylinder. Has been. Therefore, when the plug member is rotated with respect to the main body cylinder, the plug member is pushed out in the axial direction, and the plug member can be easily removed from the main body cylinder. The engaging portion may have any shape such as a corrugated shape or a protrusion.

The plug member is a tail plug, and the plug member has an insertion portion to be inserted into the main body cylinder and an exposed portion exposed from the main body cylinder, and the exposed portion is the insertion portion. The diameter is larger than the diameter, the inclined portion is on the end surface of the main body cylinder or the insertion portion side end surface of the exposed portion, and the other is provided with an engaging portion that engages with the inclined portion. The applicator according to any one of 1 to 10.

The applicator of the present invention has a structure in which an inclined portion or an engaging portion is provided on the end surface of the main body cylinder. That is, in the applicator of the present invention, the end surface of the exposed portion of the stopper member on the insertion portion side engages with the end surface of the main body cylinder, and the stopper member is pushed out in the axial direction.

According to the twelfth aspect of the present invention, when the stopper member is twisted from the state in which it is mounted at the proper position of the main body cylinder,
The applicator according to any one of claims 1 to 11, wherein the amount of movement in the axial direction caused by the engagement of the inclined portion and the engaging portion gradually changes from a small state to a large state.

In the applicator of the present invention, the amount of axial movement caused by the engagement of the inclined portion and the engaging portion changes from a small state to a gradually large state. On the contrary, the thrust at the beginning of rotation is large. Therefore, even if the plug member is fixed for some reason, the plug member can be easily removed by rotating the plug member.

The invention according to claim 13 is the applicator according to any one of claims 1 to 12, characterized in that the stopper member is provided with a tool engaging portion with which a tool is engaged. .

In the applicator of the present invention, since the tool engaging portion is provided on the plug member, the plug member can be easily removed from the main body cylinder by engaging the tool engaging portion with a tool or the like and twisting the tool. Here, the tool engaging portion may have any shape such as a concave portion that can be engaged with a tool such as a driver or a coin, or a convex portion that projects from the end portion of the plug member.

The invention according to claim 14 is the applicator according to any one of claims 1 to 13, characterized in that the stopper member and the main body cylinder are made of different materials.

According to this structure, even if the plug member is attached to the main body cylinder for a long period of time, adhesion between the plug member and the main body cylinder does not occur, and the slidability is excellent. Therefore, the applicator of the present invention,
Since the plug member can be smoothly rotated with respect to the main body cylinder, a large force is not required to remove the plug member.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION The above-mentioned tip plug is a plug member attached to one end of a main body cylinder, and a through hole is provided in the axial direction at a substantially central portion for leading out a coating liquid contained in the main body cylinder. . In many cases, the nib is held by the tip plug. The tail plug is a plug member that is attached to the other end of the main body cylinder and seals the main body cylinder, and is attached for the reason of preventing leakage of the coating liquid and the like contained in the main body cylinder. is there.

The main body cylinder of the applicator of the present invention, and the tip and tail plugs are made of polypropylene (PP) resin, polyethylene (P).
E) resin, polyacetal (POM) resin, polyethylene terephthalate (PET) resin, polybutylene terephthalate (PBT) resin, polycarbonate (PC) resin, acrylic resin such as polymethylmethacrylic (PMMA) resin, acrylonitrile butadiene styrene (A)
Resin such as styrene resin such as BS resin, acrylonitrile styrene (AS) resin and polystyrene (PS) resin is injection molded, but the material and manufacturing method are not limited to this, such as metal cutting It may be one. However, polypropylene (PP) is used to reduce the permeability of water, alcohol, and other ink solvents.
Resin and polyethylene (PE) resin are suitable as materials for the main body cylinder and the plug member of the applicator of the present invention. In addition, a resin having excellent slidability such as polyacetal resin, fluororesin, nylon, or high density polyethylene resin (HDPE) may be adopted on either the main body cylinder side or the plug member side. Of course, a resin having excellent slidability may be used on both the main body cylinder side and the plug member side. Furthermore, when the material of the main body cylinder and the material of the plug member such as the tail plug and the tip plug are different, adhesion between the main body cylinder and the plug member does not occur, and the slidability is excellent. Therefore, according to this structure, since the plug member can be smoothly rotated with respect to the main body cylinder, it is not necessary to apply a large force to remove the plug member. Further, the coating liquid contained in the main body cylinder of the applicator may be any coating liquid including water-based ink and oil-based ink. A through hole for leading out the coating liquid contained in the main body cylinder is provided in the center of the front plug in the axial direction.

The inclined portion is a portion inclined with respect to the axial direction of the main body cylinder or the plug member, and may be provided at any place on the main body cylinder and the plug member. Note that the inclined portion may have any shape such as a linear shape or a corrugated shape when viewed from the front. On the other hand, the engaging portion can engage with the inclined portion when the plug member is attached to the main body cylinder. It should be noted that the engaging portion may have any shape such as a linear shape or a corrugated shape when viewed from the front, as long as it can engage with the inclined portion.

The recommended shape of the sloping portion or the engaging portion is a structure having a gently sloping portion and a slightly sloping portion. For example, it is recommended to have a bottom portion A like the inclined portion shown in FIG. 10A, curved slopes B at both ends thereof, and a structure connected to a steep slope C. That is, if the inclined portion has a horizontal bottom portion A and a horizontal upper side portion D,
A straight steep slope C is provided between the bottom A and the upper side D, and a slope B having a curve of a relaxation curve is provided between the bottom A and the straight steep slope C. Then, the bottom portion A and the slope B are smoothly connected by the slope B having a curve like a relaxation curve. As a curve of the slope B like a relaxation curve, an arc surface, a parabola, a sine curve, an ellipse, or the like can be used. It is also recommended to have a bottom portion A like the inclined portion shown in FIG. 10B, linear gentle slopes B at both ends thereof, and a structure connected to the steep slope C.

As shown in FIGS. 10 (a) and 10 (b), when the stopper member is attached to the proper position of the main body cylinder, the engaging portion to which the engaging portion faces the bottom portion A like the inclined portion. It is in. Then, when the plug member is twisted and rotated, the engaging portion comes into contact with the gentle slope B. Therefore, the amount of movement in the axial direction caused by the engagement between the inclined portion and the engaging portion is small. Therefore, on the contrary, the thrust in the axial direction at the start of rotation is large. Therefore, even if the plug member is fixed for some reason, the plug member can be easily moved.

If an inclined portion as shown in FIG. 10 is adopted,
When the stopper member is twisted from the state where it is attached to the proper position of the main body cylinder, the amount of axial movement caused by the engagement of the inclined portion and the engaging portion changes from a small state to a gradually large state. .

[0042]

EXAMPLES Examples of the present invention will be described below. 1A and 1B are views showing an applicator 1 (marker pen) according to a first embodiment of the present invention, in which (a) is a perspective view of the applicator 1 and (b) is an exploded sectional view of the applicator 1 on the tail plug 3 side. , (C) are perspective views of the tail plug 3. The applicator 1 has a body tube 4 to which a tip plug 2 is attached at one end and a tail plug 3 at the other end. Further, a through hole 5 extending in the axial direction is provided at the center of the tip plug 2, and a pen tip 6 as a coating portion made of felt is attached inside the through hole 5.

In the tail plug 3, a sealing portion 7 having a diameter substantially the same as the outer diameter of the body cylinder 4 is provided at one end of the tail plug body portion 8.
An annular locking portion 9 is provided on the outer peripheral portion of the tail plug body portion 8.
The locking portion 9 is a rib provided on the inner periphery and projects from the inner peripheral surface. The tail plug body portion 8 is a portion that is inserted into the body barrel 4, and the sealing portion 7 is a portion that is exposed from the body barrel 4. The sealing portion 7 has a larger diameter than the tail plug body portion 8. A tool engaging portion 10 is formed on the top surface of the sealing portion 7 by a linear recess passing through the center of the sealing portion 7 and connecting two points on the circumference of the sealing portion 7. Further, an inclined corrugated engaging portion 11 is provided on the other end surface of the tail plug body portion 8, and the engaging portion 11
Is a configuration in which crests 11a projecting in the axial direction and troughs 11b projecting in the opposite direction to the crests are alternately combined.

On the other hand, the main body cylinder 4 is a cylinder whose both ends are open, and the inner periphery of one end is a ring-shaped recess, and the pair of locking portions 12 with which the locking portion 9 of the tail plug 3 can be engaged. There is. The locking portion 9 and the paired locking portion 12 constitute a mounting maintaining structure 13 that maintains the state in which the tail plug 3 is mounted on the main body cylinder 4.

Further, in this embodiment, the other portions of the tail plug body 8 also function as the attachment maintaining structure. That is, the outer diameter of the tail plug main body 8 (excluding the locking portion 9) is slightly larger than the inner diameter of the main body tube 4, and when the tail plug main body 8 is built in the main body tube 4, the tail plug The body portion 8 is in a state of pressing the inner surface of the body tube 4. Therefore, the tail plug body 8
Even with the pressing force of, the state where the tail plug 3 is attached to the main body cylinder is maintained. In addition, in the present embodiment, the locking portion 9 and the other portions of the tail plug body portion 8 constitute the attachment maintaining structure portion 13, but the locking portion 9 may be used alone to prevent the tail plug 3 from coming off. On the contrary, the locking portion 9 may be omitted and the tail plug 3 may be prevented from coming off only by the pressing force of the tail plug body portion 8.

The width L of the annular recess which is the anti-locking portion 12 employed in this embodiment is smaller than the height difference X between the peak portion 11a and the valley portion 11b of the tail plug 3 which is the engaging portion 11. That is, the width L of the annular recess is shorter than the axial length X of the inclined portion.

Further, a narrowed portion 14 having a narrowed inner diameter is formed in the vicinity of an end of the main body cylinder 4 on the side of the paired locking portion 12,
An inclined corrugated inclined portion 15 is provided in a portion of the narrowed portion 14 facing the main body shaft end side. That is, the inclined portion 1
Reference numeral 5 is a configuration in which a protruding portion 15a protruding toward the pair of locking portions 12 and a recessed portion 15b protruding in a direction opposite to the protruding portion 15a are alternately combined. Although the tail plug 3 and the main body cylinder 4 in this embodiment are made of resin, they may be made of any material such as those obtained by cutting metal.
The diameter of the sealing portion 7 may be any size, but it is desirable that it is substantially the same as the outer diameter or the inner diameter of the main body cylinder 4. Further, inside the main body cylinder 4, the inner cylinder 1 having a cylindrical shape smaller than the inner diameter of the main body cylinder 4 and holding the coating liquid therein is provided.
6 are arranged. That is, a liquid absorbing member called batting is built in the inner cylinder, and the coating liquid such as ink is soaked into the batting.

Normally, the applicator 1 is used with the tail plug 3 attached to the main body cylinder 4. That is, the tail plug 3 is the body tube 4
The tail plug main body portion 8 is inserted from the end portion on the anti-locking portion 12 side to the position where the sealing portion 7 abuts the main body cylinder 4, and the locking portion 9
The tail plug 3 is attached to the main body cylinder 4 by being locked by the pair locking portion 12. In the present embodiment, as described above, the tail plug body 8 is also prevented from coming off by pressing the inner surface of the body cylinder 4, but most of the force for pulling out the pair is engaged with the locking portion 9. It depends on the engaging force of the stop 12. That is, when the tail plug 3 is attached to the main body cylinder 4, the locking portion 9 on the tail plug 3 side and the paired locking portion 12 on the main body cylinder 4 engage with each other to prevent the plug member 3 from coming off. Is made. Specifically, the annular rib protrusion that is the locking portion 9 engages with the annular recess that is the paired locking portion 12. Therefore tail plug 3
The engagement length between the side locking portion 9 and the paired locking portion 12 on the main body cylinder 4 side is equal to the groove width L of the annular recessed portion that is the paired locking portion 12.
At this time, the engaging portion 11 of the tail plug 3 is the inclined portion 1 of the main body tube 4.
5 is engaged.

When the tail plug 3 is to be pulled out in the axial direction of the body cylinder 4, since the locking portion 9 is firmly engaged with the paired locking portion 12, a considerable pulling force is required in the axial direction. However, when the tail plug 3 is twisted with respect to the main body cylinder 4, it is easily disengaged from the main body cylinder 4.

That is, when the tail plug 3 is twisted with respect to the main body cylinder 4, the corrugated engaging portion 11 provided at the end of the tail plug main body 8 is provided.
Rotates with respect to the corrugated inclined portion 15 engaged with the engaging portion 11. With the rotation, the mountain portion 1 of the engaging portion 11
The protruding portion 15a of the inclined portion 15 rotates while abutting on 1a, and a repulsive force is generated in the axial direction between the tail plug 3 and the main body cylinder 4,
The repulsive force gradually increases as the tail plug 3 rotates. The tail plug 3 is firmly fixed to the main body cylinder 4 by the locking force generated when the locking portion 9 locks on the pair locking portion 12, but when the rotation of the tail plug 3 is advanced, the axial direction is eventually increased. When the repulsive force of the main cylinder 4 increases, and eventually the repulsive force becomes larger than the locking force.
Is pushed out in the axial direction and the tail plug 3 is disengaged from the main body cylinder 4.

Further, particularly in this embodiment, as shown in FIG. 1, the pair locking portion 12 having a function of retaining the tail plug 3 in the main body shaft 4 is held.
Since the height difference X (the axial length of the inclined portion) of the inclined portion 15, which is the amount of axial movement of the tail stopper 3, is longer than the width L of the (annular recess), the tail stopper 3 is twisted. Tail plug 3 caused by
The amount of movement of is larger than the engagement length of the locking portion 9 and the locking portion 12. Therefore, when the tail plug 3 is twisted, the locking portion 9 is reliably disengaged from the pair locking portion 12.

Since the tool engaging portion 12 is provided on the surface of the sealing portion 7 of the tail plug 3 used in the applicator 1, the tool engaging portion 12 is used for holding tools such as a screwdriver and coins. If you match, you can rotate more easily. When the applicator 1 is used normally, the tail plug 3 is firmly attached to the main body tube 4 and cannot be easily removed. However, if the tail plug 3 is rotated with respect to the main body tube 4, the tail plug 3 can be easily removed from the main body tube 4. Since the plug 3 can be removed, the coating liquid can be easily filled and exchanged in the main body cylinder 4. Further, since the tail plug 3 can be integrated by simply pushing it into the end of the main body cylinder 4, the applicator 1 can be easily manufactured.

The tool engaging portion 10 provided on the surface of the sealing portion 7 of the tail plug 3 is not limited to the above-mentioned linear depression shape, and a cross-shaped depression as shown in FIG.
It may have any shape, but it is desirable that the tool, such as a coin or a tool such as a screwdriver, is easily engaged with the tool. Further, the tool engaging portion 10 is, as shown in FIG.
It may be a convex portion protruding in a straight line connecting two points on the circumference of the sealing portion 7. Further, the shape of the convex portion is not limited to a straight line,
It may have any shape such as the cross shape shown in FIG.
In addition, the tool engaging portion 10 has a sealing portion 7 as shown in FIG.
There may be a plurality of recesses provided on the side surface of the. The tool engaging portion 10 provided on the side surface of the sealing portion 7 may have any unevenness and shape.

The engaging portion 11 provided on the tail plug 3 is
Although the front view has a waveform in the present embodiment, the engaging portion 11
Is not limited to this, the straight type that has a slope in the front view,
It may have any shape such as a protrusion. On the other hand, although the inclined portion 15 provided in the main body cylinder 4 of the present embodiment has a corrugated shape, the inclined portion 15 is not limited to the corrugated shape like the tail plug 3, and has a linear shape having an inclined front view. Things
It may have any shape such as a protrusion.

In addition, in the applicator 1, the tail plug 3 is fixed to the main body cylinder 4 by the attachment maintaining structure 13 which is composed of the engaging portion 9 and the pair engaging portion 12, but the attaching maintaining structure 13 is The structure is not limited to the above. That is, the attachment maintaining structure 13 may be configured by a recess provided on the outer circumference of the tail plug main body 8 of the tail plug 3 and a projection engaging with the recess provided on the inner circumference of the main body cylinder 4. Further, the attachment maintaining structure 13 may be such that projections are provided on the outer circumference of the tail plug main body 8 of the tail plug 3 and the inner circumference of the main body cylinder 4, and both are engaged.

The second embodiment of the present invention will be described below. Since the applicator 20 of the present embodiment has substantially the same structure as the applicator 1 described above, the same parts are designated by the same reference numerals, and detailed description thereof will be omitted. FIG. 6 is a cutaway perspective view of the applicator 20 of the present embodiment on the tail plug 3 side. In the applicator 20 of the present embodiment, the positions of the engaging portion 11 provided on the tail plug 3 and the inclined portion 15 provided inside the main body cylinder are different from those of the applicator 1 described above. That is, the engaging portion 11
Is provided at an intermediate portion of the tail plug body 8 in the axial direction, and the inclined portion 1
Reference numeral 5 is provided at a position where it can be engaged with the engagement portion 11 of the main body cylinder 4.

The tail plug body portion 8 is inserted from the end of the main body tube 4 on the side of the pair locking portion 12 and the locking portion 9 is locked to the pair locking portion 12, whereby the tail plug 3 is attached to the main body tube 4. Is attached to. In addition, normally, the engaging portion 11 of the tail plug 3 is the inclined portion 15 of the main body cylinder 4.
Is engaged with.

On the other hand, when the tail plug 3 is twisted with respect to the main body shaft 4,
The corrugated engaging portion 11 provided at the axially intermediate portion of the tail plug body 8 is engaged with the engaging portion 11 and the corrugated inclined portion 1 is engaged.
Rotate with respect to 5. At this time, the engaging portion 1
The protruding portion 15a of the inclined portion 15 moves while contacting the mountain portion 11a of No. 1 and a repulsive force is generated between the tail plug 3 and the main body cylinder 4,
The repulsive force increases as the rotation of the tail plug 3 progresses. The tail plug 3 is firmly fixed to the main body cylinder 4 by the locking force generated when the locking portion 9 locks on the pair locking portion 12, but as the tail plug 3 rotates, the repulsive force is eventually applied. Becomes larger than the locking force, the main body cylinder 4 is pushed out in the axial direction, and the tail plug 3 is moved to the main body cylinder 4
Get out of.

In the applicator 20 of this embodiment, the engaging portion 11 and the inclined portion 15 are both wavy in a front view, but the engaging portion 11 and the inclined portion 15 are straight in a front view. It may have a shape. Also,
As shown in FIG. 7, the engaging portion 11 and the inclined portion 15 may be protrusions provided on the outer circumference of the tail plug body portion 8 and the inner circumference of the body barrel 4, respectively.

The tail plug 3 has a tool engaging portion 1 similar to the applicator 1.
Since 2 is provided, the tool engaging portion 12 can be rotated more easily by engaging a tool such as a screwdriver or a coin. Therefore, when the applicator 20 is normally used, the tail plug 3 is firmly attached to the main body cylinder 4 and cannot be easily removed. On the other hand, the applicator 20 can easily remove the tail plug 3 from the main body cylinder 4 by rotating the tail plug 3 with respect to the main body cylinder 4, and can replenish the interior of the main body cylinder 4 with the coating liquid. The tail plug 3
The tool engaging portion 10 provided in the above may have any shape like the applicator 1 of the first embodiment.

FIG. 8 is a cutaway perspective view near the tail plug 3 of the applicator 30 of the third embodiment of the present invention. Since the applicator 30 of the present embodiment also has the same structure as the applicators 1 and 20 described above, common parts are denoted by the same reference numerals, and detailed description thereof will be omitted. In the applicator 30 of this embodiment, unlike the applicators 1 and 20, the engaging portion 1
1 is provided on the back surface of the sealing portion 7 of the tail plug 3. The sealing portion 7 is a portion exposed from the main body cylinder 4 as described above, and has a larger diameter than the tail plug main body portion 8. In the applicator 30 of the present embodiment, the engaging portion 11 is located on the end surface of the exposed portion of the tail line 3 on the insertion portion side. On the other hand, the inclined portion 15 is provided at the open end of the main body cylinder 4.

In the applicator 30, the tail plug body 8 is inserted from the end of the body cylinder 4 on the side of the pair locking part 12 and the locking part 9 is locked to the pair locking part 12. , Attached to the body tube 4. In addition, normally, the engaging portion 11 of the tail plug 3 is engaged with the inclined portion 15 of the main body cylinder 4.

On the other hand, when the tail plug 3 is rotated with respect to the main body cylinder 4, the tail plug 3 is easily separated from the main body cylinder 4. This is because when the engaging portion 11 rotates with respect to the inclined portion 15, the protruding portion 15a of the inclined portion 15 moves while contacting the mountain portion 11a of the engaging portion 11, and the tail plug 3 and the main body tube 4 are moved. This is because a repulsive force is generated between the two and the main body cylinder 4 is pushed out in the axial direction by the repulsive force.

The tail plug 3 is a tool engaging portion 12 similar to the applicator 1.
Since the tool engaging portion 12 is provided with a tool such as a screwdriver or a coin, the tool engaging portion 12 can be easily rotated.
Therefore, although the applicator 30 does not easily come off the main body tube 4 due to the action of the attachment maintaining structure during normal use,
If the tail plug 3 is rotated with respect to the body cylinder 4, the body cylinder 4 can be easily
It is an applicator with which the tail plug 3 can be removed. Therefore, the applicator 30 of this embodiment can easily fill and replace the coating liquid in the main body cylinder 4. The tool engagement portion 1 provided on the tail plug 3
0 may have any shape like the applicator 1 of the first embodiment.

Next, the applicator 40 of the fourth embodiment of the present invention will be described. FIG. 9 is an exploded sectional view of the applicator 40 on the front plug 2 side. The front plug 2 includes a tip portion 41, a mounting portion 42, and a contact portion 43. The tip portion 41 has a substantially conical shape, and the cross-sectional area decreases toward the tip. Also,
A penetrating hole 5 is provided in the tip portion 41, and a pen tip 6 which is a felt-made coating portion is attached inside the penetrating hole 5 so as to penetrate in the axial direction. In addition, there is a pair of locking portions 44, which are annular recesses, on the outer periphery of the mounting portion 42, and an end portion of the mounting portion 42 has a mountain portion 45 protruding in the axial direction.
There is provided an engaging portion 45 in which a and a trough portion 45b protruding in a direction opposite to the crest portion are alternately combined to form a waveform. The engaging portion 45 is not limited to the corrugated slope, and may have any shape as long as it is slanted in the axial direction.

On the other hand, the main body cylinder 4 is a cylinder whose both ends are open, and a locking portion 46 projecting in an annular shape is provided on the inner circumference of the front plug 2 side. The locking part 46 and the pair locking part 44 can be locked to each other, and the mounting maintaining structure part 47 is constituted by both. Further, in the vicinity of the end of the main body tube 4, a narrowed portion 48 is formed by narrowing the inner diameter of the main body tube 4, and the portion facing the main body shaft end side of the narrowed portion 48 has an inclined corrugated slope. A section 49 is provided. The inclined portion 49 is formed in a corrugated shape by alternately combining a protruding portion 49a protruding in the axial direction and a recessed portion 49b protruding in the opposite direction to the protruding portion 49a. Further, inside the main body cylinder 4, an inner cylinder 50 having a cylindrical shape smaller than the inner diameter of the main body cylinder 4 and holding the coating liquid therein is arranged, and at the end of the inner cylinder 50, the coating part is formed. The end of 6 is plugged.

In the applicator 40, the front plug 2 is inserted from the mounting portion 42 side into the end portion of the main body cylinder 4 on the locking portion 46 side. Also,
In the applicator 40, the contact portion 43 of the tip plug 2 is in contact with the end portion of the main body cylinder 4, and the end portion of the application portion 6 is mounted in the inner cylinder 50. Further, the inclined portion 4 of the main body cylinder 4 is attached to the engaging portion 45 of the front plug 2.
9 is engaged. The applicator 40 has a pair of locking portions 44 of the front plug 2.
The locking portion 46 of the main body cylinder is firmly locked to, and the strength in the axial direction is particularly strong.

When the tip plug 2 of the applicator 40 is twisted with respect to the main body tube 4, the crest portion 4 of the engaging portion 45 is interlocked with it.
5a moves while contacting the protruding portion 49a of the inclined portion 49, and a repulsive force is generated between the front plug 2 and the main body cylinder 4. When the front plug 2 is further twisted, the repulsive force increases as the rotation of the front plug 2 progresses, and eventually the repulsive force is generated by the pair locking portion 44 and the locking portion 46.
It becomes stronger than the locking force due to, and the main body cylinder 4 is pushed out in the axial direction, and the front plug 2 comes off from the main body cylinder 4.

Therefore, the inner cylinder 50 built in the applicator 40.
At the time of replenishing the coating liquid to the inner cylinder 50 or replacing the inner cylinder 50, the front plug 2 which is sealed by the main cylinder 4 is simply twisted.
The coating liquid can be easily replenished or the inner cylinder 50 can be replaced.

Although the above-mentioned first to fourth embodiments relate to the marker pen, the applicators 1, 20, 30, 40 are not limited to the marker pens, and can be applied to any applicator such as a ballpoint pen. Applicable.

[0071]

Since the applicator of the present invention has the attachment maintaining structure, the plug member and the main body tube are firmly fixed to each other. Also,
Since the plug member can be easily removed by twisting it against the body tube,
It is possible to fill and replace the coating liquid inside the main body cylinder.
Further, when the coating liquid is stored in the inner cylinder and the inner cylinder is stored inside the main body cylinder, filling and replacement of the coating liquid can be easily performed. Further, in the applicator of the present invention, the attachment maintaining structure is made up of a simple structure such as a protrusion and a recess, so that it is easy to manufacture.

[Brief description of drawings]

FIG. 1 is a view showing an applicator of a first embodiment of the present invention,
(A) is a perspective view of an applicator, (b) is an exploded sectional view of the tail plug side of the applicator, (c) is a perspective view of the tail plug.

FIG. 2 is a perspective view showing a modified example of the tail plug of the applicator of the first embodiment of the present invention.

FIG. 3 is a perspective view showing another modified embodiment of the tail plug of the applicator of the first embodiment of the present invention.

FIG. 4 is a perspective view showing still another modified example of the tail plug of the applicator of the first embodiment of the present invention.

FIG. 5 is a perspective view showing still another modified example of the tail plug of the applicator of the first embodiment of the present invention.

FIG. 6 is a cutaway perspective view near the tail plug of the applicator according to the second embodiment of the present invention.

FIG. 7 is a cutaway perspective view showing a modified embodiment of the tail plug and the main body tube of the applicator of the second embodiment of the present invention.

FIG. 8 is a cutaway perspective view around a tail plug of an applicator of a third embodiment of the present invention.

FIG. 9 is a cutaway perspective view near a tail plug of an applicator of a fourth embodiment of the present invention.

FIG. 10 is an explanatory diagram showing an example of an inclined portion and an engaging portion.

FIG. 11 is a perspective view showing a conventional applicator.

[Explanation of symbols]

1,20,30,40,100 Applicator 2 plug 3 tail plugs 4,101 Body tube 9,46 Locking part 10 Tool engagement part 11,45 Engagement part 12,44 pair locking part 13,47 Wearing maintenance structure section 14,48 stenosis 15,49 Inclined part 16,50 inner cylinder

Claims (14)

[Claims] 1. A main body cylinder for accommodating a coating liquid, and a plug member for at least one of a front plug and a tail plug, wherein the main body cylinder is fitted with the plug member, and further the plug member is mounted on the main body cylinder. In the applicator provided with the attachment maintaining structure for maintaining the state, at least one of the main body cylinder and the plug member is provided with an inclined portion, and the other is provided with an engaging portion that engages with the inclined portion. By twisting the plug member against the main body tube,
An applicator characterized in that the plug member is pushed out in the axial direction. 2. The applicator according to claim 1, wherein an inner cylinder is further provided in the main body cylinder, and the coating liquid is stored in the inner cylinder and then stored in the main body cylinder. 3. The applicator according to claim 1, wherein the applicator is a marker pen or a ballpoint pen. 4. The attachment maintaining structure is composed of a protrusion provided on the inner circumference or the outer periphery of at least one of the main body cylinder and the plug member, and a protrusion engagement portion engaging with the protrusion provided on the other. The applicator according to any one of claims 1 to 3, wherein the applicator is applied. 5. The attachment maintaining structure engages with an annular protrusion provided on the entire circumference of at least one of the main body cylinder and the plug member, and the protrusion provided on the other of the main body cylinder and the plug member. The applicator according to any one of claims 1 to 4, wherein the applicator is configured by a protrusion or a recess. 6. The attachment maintaining structure engages with an annular projection provided on the entire circumference of at least one of the main body tube and the plug member, and the projection provided on the other of the main body tube and the plug member. The applicator according to any one of claims 1 to 4, wherein the applicator is configured by an annular protrusion. 7. The plug member is inserted into the main body cylinder in a state where a part or all of the outer peripheral portion presses the inner surface of the main body cylinder, and the pressed portion functions as a mounting maintaining structure portion. The applicator according to any one of 1 to 6. 8. The mounting maintenance structure portion has an engaging portion for engaging the main body tube and the plug member with each other, the main body tube and the plug member are engaged over a certain engagement length, and The length in the axial direction is longer than the engagement length, and the engagement of the engagement portion is released by pushing the plug member in the axial direction. Applicator. 9. The applicator according to claim 1, wherein the inclined portion has a corrugated shape. 10. A narrowed portion having a narrowed inner diameter is provided in the vicinity of an end portion of a main body cylinder, and an inclined portion is provided at a portion of the narrowed portion facing the main body shaft end side. Item 10. The applicator according to any one of items 1 to 9. 11. The plug member is a tail plug, and the plug member has an insertion part to be inserted into the main body cylinder and an exposed part exposed from the main body cylinder, and the exposed part has a larger diameter than the insertion part, The inclined portion is on the end surface of the main body tube or the insertion portion side end surface of the exposed portion, and the other is provided with an engaging portion that engages with the inclined portion. Applicator described. 12. When the stopper member is twisted from a state where the stopper member is attached to the regular position of the main body cylinder, the amount of axial movement caused by the engagement between the inclined portion and the engaging portion is changed from a small state to a gradually large state. The applicator according to any one of claims 1 to 11, wherein the applicator changes. 13. The applicator according to claim 1, wherein the plug member is provided with a tool engaging portion with which a tool is engaged. 14. The applicator according to claim 1, wherein the stopper member and the main body cylinder are made of different materials.