JP2011073400A - Applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cap of an applicator which is easy in the opening and closing work of the cap even if a glove is worn, and hardly causes the drop of the cap after being detached. <P>SOLUTION: The cap 24 of the applicator has a closed front end and an opened rear end, and an application body 16 arranged at a tip of a shaft cylinder 10 of the applicator is covered with the cap 24 from the rear side, whereby the cap 24 of the applicator is detachably fitted into the shaft cylinder 10 so as to seal and keep airtightness by covering a circumferential space of the application body 16. The cap includes a grip 24a in which an outside diameter of a center in an axial direction of the cap 24 is smaller than that of a tip in the axial direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a cap for an applicator that is detachably fitted to the shaft cylinder so as to be sealed so as to cover the space around the application body provided at the tip of the shaft cylinder of the applicator and keep airtight.
About.

  Marking pens that use metal or resin materials with oil-based inks are often used when marking products in factories.

  This type of marking pen is stored by putting a cap on the tip of the pen and removing the cap at the time of use.

  However, usually, at work sites such as factories, workers are engaged in work with gloves such as gloves. When an operator removes a cap to use a marking pen, the operator usually grasps the cap while wearing gloves, so that it is easy to slip and difficult to remove the cap.

  From the viewpoint of preventing slipping, a technique has been proposed in which a flange-like uneven portion is provided on the cap to avoid difficulty in slipping.

  For example, Japanese Utility Model Laid-Open No. 5-12183 (Patent Document 1) describes a structure in which a plurality of collars are formed around a cap that covers a pen body of a writing instrument body.

  Further, in Japanese Utility Model Laid-Open No. 7-11384 (Patent Document 2), concave and convex portions are provided on opposing surface portions of the side surface portion of the cylindrical cap body and the inner surface portion of the clip to prevent the chest cap from falling off. It is.

  However, in order to remove the cap of the applicator, if only a fine uneven portion is formed on the side of the cap as in Patent Documents 1 and 2, it is difficult to prevent slipping effectively with gloves, and the cap is Problems that are difficult to remove remain.

  In addition, since it is difficult to handle with gloves, it is difficult to hold the cap after removing the cap, and there is a risk that it will be removed.

Japanese Utility Model Publication No. 5-12183 KAIKAI 7-11384

  In view of the above circumstances, the present invention is intended to provide a cap for an applicator that can be easily opened and closed even in a gloved state and is difficult to remove the cap after removal.

  The present invention relates to a cap of a coating tool.

  The present invention is a cap that is closed on the front side and opened on the rear side, and the coated body provided at the tip of the shaft cylinder of the coating tool is covered with the cap from the opening on the rear side. In the cap of the applicator that is detachably fitted to the shaft cylinder so that it can be sealed so as to cover the surrounding space and keep airtight, the outer diameter of the central portion in the axial direction of the cap is larger than the outer diameter of the tip portion in the axial direction. It is a cap of the applicator characterized by having a small diameter.

  In the present invention, it is preferable that anti-slip means is formed on the outer peripheral surface of the axially central portion of the cap. In this case, the anti-slip means may be formed on either the entire outer peripheral surface portion or the axially central portion of the cap.

  In the present invention, it is preferable that the anti-slip means has an uneven shape.

  Further, in the present invention, even if the outer diameter of the central portion in the axial direction of the cap is narrower than the outer diameter of the front and rear end portions in the axial direction and the grip portion is formed in a shape that can be gripped with fingers. good.

  In the present invention, it is preferable that the tip of the concavo-convex convex portion is formed at an acute angle.

  Further, in the present invention, it is preferable that the surface of the shaft tube is subjected to anti-slip processing.

  In the present invention, it is preferable that the outer peripheral surface portion of the cap is provided with a clip having a width narrower than the outer diameter of the central portion in the axial direction of the cap.

  In the present invention, a holding portion for holding the coated body is provided at the tip of the shaft tube, and the front side of the holding portion is formed with a smaller diameter than the rear side, and the outer peripheral portion of the thin holding portion and the inner periphery of the cap A seal structure that maintains the airtightness of the space around the coated body is formed at locations corresponding to the part, and the seal structure of the cap inner peripheral part is located on the inner peripheral side of the axially central part of the cap. It is preferable that they are formed.

  Further, in the present invention, the axially central portion of the cap and the inner peripheral portion on the side of the cap are formed with a narrower inner diameter around the coated body than the inner diameter around the holding portion and are closed at the tip, It is preferable that the outer peripheral portion ahead of the central portion in the axial direction is formed in the shape of a hollow bowl expanding forward.

  According to the cap of the applicator of the present invention, the outer diameter of the central portion in the axial direction of the cap is smaller than that of the distal end portion in the axial direction, so that the user of the applicator can remove the cap while wearing gloves. When trying to do so, you can grip and hold the axial center part with a smaller diameter than the axial tip part of the cap with your fingers to apply force, making it easy to open and close the cap without slipping. It has the effect of making it particularly easy to use at work and construction sites.

  Moreover, since the shape which forms an axial center part smaller diameter than the axial front-end | tip part of a cap is easy to hold | maintain compared with the simple unevenness | corrugation of a prior art, it does not remove. In addition, the constricted knob can be easily carried by tying a string.

  Further, since the cap has a small diameter at the central portion in the axial direction, the coated body can be narrowed to a portion sealed on the outer periphery of the holding portion or the like that is supported by the tip of the shaft tube, so that the cap can be easily thinned.

  In addition, the non-slip means is formed on the outer peripheral surface of the axial center portion that is smaller in diameter than the tip end portion in the axial direction of the cap, so that it becomes more difficult to slip when the axial center portion is gripped. Is easy to remove from the barrel.

Further, the anti-slip means can effectively form anti-slip as an uneven shape.
Further, the outer diameter of the central portion in the axial direction of the cap is narrower than the outer diameter of the front and rear end portions in the axial direction, and the grip portion is formed in a shape that can be gripped with fingers.

  Moreover, the front-end | tip part of an uneven | corrugated shaped convex part can be formed in an acute angle. The acute angle can be variously formed by making the convex part of the concavo-convex shape into a chevron shape, a saw blade shape or the like in the cross section.

  Further, if the surface of the shaft cylinder is subjected to anti-slip processing, anti-slip can be effectively performed.

  Further, if the outer peripheral surface of the cap is provided with a clip having a width that is narrower than the outer diameter of the central portion in the axial direction of the cap, the clip does not get in the way when grasping the central portion in the axial direction. Can be played. In addition, it is suitable for the thickness in a cap to set it as cap top diameter> grip part> clip width.

  Further, in the present invention, a holding portion for holding the coated body is provided at the tip portion of the shaft tube, and the front side of the holding portion is formed to have a smaller diameter than the rear side. A seal structure that maintains airtightness in the space surrounding the coated body is formed between corresponding portions with the peripheral part, and the seal structure of the cap inner peripheral part is located on the inner peripheral side of the axially central part of the cap. As a result, the sealing structure is formed between the small-diameter fitting portions, so that the sealing length can be shortened and the sealing performance can be improved as compared with the case of a large diameter. In this case, a close fitting and sealing can be simultaneously performed by providing a fitting portion on the rear side separately from the seal structure.

  Further, in the present invention, the axially central portion of the cap and the inner peripheral portion on the side of the cap are formed with a narrower inner diameter around the coated body than the inner diameter around the holding portion and are closed at the tip, If the outer peripheral part ahead of the axial center part is formed in a hollow bowl shape that expands forward, the part formed in the outer peripheral hook part at the axial center part is thinned and the resin is molded. Thus, it is possible to achieve excellent effects such as no longer being attracted to the cap.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole explanatory drawing of the applicator concerning 1st embodiment of this invention, Comprising: (a) is one side view, (b) is the other side view rotated 90 degree | times centering on the axis | shaft from this one side view, c) Another side view rotated 90 ° about the axis from the other side view, (d) is a view seen from the cap side at the axial tip, (e) is a view seen from the axial rear end, (f) is a view A rear perspective view and (g) are front perspective views. (A) is the longitudinal cross-sectional view of the applicator of FIG. 1, (b) is the front expanded sectional view of this applicator. It is explanatory drawing of what attached the coating body and the sponge body to the spring body which integrally formed the valve body in the front end, (a) is one side view, (b) is rotated 90 degrees from this one side to the axis center (C) is a longitudinal sectional view in the axial direction, (d) is a view seen from the front side in the axial direction, and (e) is a view seen from the rear side in the axial direction. It is explanatory drawing of a cap, (a) is one side view, (b) is the other side view rotated 90 degree | times centering on the axis | shaft from this one side surface, (c) is a longitudinal cross-sectional view of the axial direction about (b), (D) is another side view rotated 90 ° about the axis from the other side view, (e) is a view seen from the axial direction, (d) is a view seen from the rear in the axial direction, and (f) is a rear view. A perspective view and (g) are front perspective views. It is explanatory drawing of each Example 1 and 2 which formed the anti-slip | slip means of the cap variously, Comprising: (a) is one side view of the cap which concerns on Example 1, (b) is 90 centering on an axial center from this one side surface. (C) is another side view rotated 90 ° from the other side view about the axis, (d) is a side view of the cap according to Example 2, and (e) is the one side view. The other side view which rotated 90 degrees to the axis center from (f) is another side view which further rotated 90 degrees to the axis center from the said other side view. It is explanatory drawing of the spring body which integrally formed the valve body in the front-end | tip, (a) is a longitudinal cross-sectional view, (b) is one side view, (c) The other side view rotated 90 degrees from one side to the shaft center (D) is the longitudinal cross-sectional view about (c), The figure seen from the axial direction front of (e), (f) is the figure seen from the axial direction back. It is a longitudinal cross-sectional view which shows the applicator of 2nd embodiment.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1-7 is explanatory drawing of the applicator (for example, writing instrument) which provided the cap which concerns on embodiment, and each part structure. 1 (a) to (g) are overall explanatory views of the applicator according to the embodiment, FIGS. 2 (a) and 2 (b) are explanatory views of the structure of the applicator according to the first embodiment, and FIG. (A)-(e) is the state explanatory drawing which assembled | attached sponge to the spring body of 1st embodiment which integrally molded the valve body, FIG.4 (a)-(h) is a structure of the cap of a coating tool. FIGS. 5 (a) to 5 (f) are explanatory diagrams of cap embodiments 1 and 2, FIGS. 6 (a) to 6 (f) are explanatory diagrams of a spring body integrally formed with a valve body, and FIG. It is a coating tool which concerns on 2nd embodiment.

  As shown in FIG. 1, in the applicator according to the first embodiment, the ink tank 12 that stores the ink at the rear of the shaft tube 10 and the inside of the shaft tube 10 communicate with each other, and the stirrer is connected to the ink tank 12. 14, and at the front of the shaft cylinder 10, a coating body (pen core) 16 with a tip projecting, a valve body 20 that opens and closes an ink flow path 18, and a valve body 20 by elasticity. A spring body 22 is provided inside the valve body 20 to open the valve body 20 against the resilience of the spring body 22 by pressing the coating body 16 of the pen tip. Ink is guided to the application body 16, thereby enabling the ink to be applied (written) to the object.

  The cap 24 of the applicator is closed on the front side and opened on the rear side. The cap 24 is applied to the applicator 16 provided at the tip of the shaft 10 of the applicator from the opening on the rear side. The cover 10 is detachably fitted to the shaft tube 10 so as to be sealed so as to cover the surrounding space of the coated body 16 and keep airtight.

  A specific configuration of the applicator will be described.

  As shown in FIGS. 1 and 2, the rear portion of the shaft cylinder 10 whose rear end portion is closed is an ink tank 12 that accommodates ink in its inner space, and the rear end portion 10 a is reduced in diameter in a stepped manner. Thus, the cap 24 is formed to have an outer diameter that can be fitted.

  A substantially hollow cylindrical tip shaft 26 is fitted into the front end portion of the shaft tube 10. The rear end (insertion tip) 26a of the front shaft 26 reaches the vicinity of the center portion of the shaft tube 10, and the rib 12a is formed on the inner surface of the ink tank 12 of the shaft tube 10 from the rear end to the vicinity of the center portion along the axial direction. A plurality of protrusions are formed.

  A flange 26b is formed on the outer periphery of the central portion of the tip shaft 26, and the tip shaft 26 is positioned so as to abut against the tip end portion 10b of the shaft tube 10 so as not to go into the shaft tube 10 any more. Further, a valve receiving portion 26c is formed on the inner periphery of the front portion of the front shaft 26 so as to project annularly inward, and the outer periphery of the valve body 20 contacts and separates.

  A male screw portion 26d is formed on the outer peripheral surface portion of the front shaft 26 behind the flange 26b, and the male screw portion 26d is screwed and fixed to the female screw portion 10c on the inner peripheral surface portion of the shaft cylinder 10 at the corresponding location. Thus, the tip shaft 26 is prevented from being removed from the shaft tube 10.

  Further, flat cutouts corresponding to jigs such as spanners are formed at an interval of 180 ° on the outer peripheral surface of the flange 26b. By rotating with respect to the shaft tube 10, the front shaft can be removed from the shaft tube 10 and ink can be poured into the ink tank 12. That is, it can be reused. Needless to say, the ink tank 12 may be a cartridge type that can be detached from the shaft cylinder 10.

  A rear portion 28a of a holding portion (also referred to as a cuticle) 28 for holding the coating body 16 that houses the coating body 16 so as to be movable back and forth is fitted into the front end portion of the front shaft 26. A rib 28c is formed on the inner peripheral surface of the front portion 28b of the holding portion 28 to guide the coated body 16 so as to be able to advance and retract. The front portion 28b of the holding portion 28 is formed to have a smaller diameter than the rear portion 28a in accordance with the coated body 16, and the outer diameter of the central portion protrudes in a flange shape so as to contact the tip of the front shaft 26 and the rear portion 28a is larger than that. It does not go into the front shaft 26. In the rear portion 28 a of the holding portion 28, a sponge 30 is provided so as to surround the rear portion of the coated body 16 and the outer periphery of the valve body 20.

  The sponge 30 is positioned in front of the valve receiving portion 26c of the front shaft 26, and when the valve body 20 and the valve receiving portion 26c are opened, the ink flowing in the ink flow path suddenly flows into the applying body 16. In order to prevent overflowing from the gap (between the ribs 28c of the holding portion front portion 28b, etc.), it has a function of temporarily holding and adjusting the ink so as to flow out stably to the coated body 16.

  The coated body 16 is generally a rod-shaped body, and has a shape that is rounded off at the tip and is cut off at the rear end.

  2, 3 and 6, the spring body 22 is a cylinder having a valve body 20 at the tip, a substantially spiral resilient portion 22a at the center, and a flange-like portion 32a at the rear. A shaped part (regulation receiving part) 32 is formed.

  The valve body 20 has a front portion 20a having a cylindrical shape, a rear portion 20b having a conical side portion, and a partition wall 20c at the center.

  The conical side surface portion of the rear portion 20b is in contact with the inner surface of the circular opening of the valve receiving portion 26c of the front shaft 26 obliquely. The ink flow path 18 is opened and closed.

  In the spring body 22, a space 34 into which the stirring body 14 can be inserted and removed is provided. That is, a hollow space 34 is formed in the central portion in the cross-sectional direction from the rear cylindrical portion 32 to the resilient portion 22a and further to the front valve body 20 rear portion 20b, and the stirring body 14 is inserted into and removed from this space 34. It is configured freely.

  Here, the agitator 14 has a rod shape, and the rear end portion 14a has a diameter larger than that of other portions, and is formed in a flange shape.

  The spring body 22 is integrally formed with a cylindrical portion (regulation receiving portion) 32 formed of a contact portion having an inner diameter smaller than the outer diameter of the rear end portion 14a of the stirring body 14 at the rear end portion. It is. Thus, the cylindrical portion 32 engages the rear end portion 14a of the stirring body 14 with the inner step portion 32b, and the tip end portion of the stirring body 14 is the valve body 20 (of the tip end portion of the spring body 22). The partition 20c) is regulated so as not to contact the inner surface.

  In addition, the cylindrical portion 32 at the rear end of the spring body 22 has an unevenness on the outer peripheral surface fitted to an unevenness on the inner peripheral surface of the rear end of the front shaft 26 so that the spring body 22 does not come off from the front shaft 26. Has been. Further, the rear end of the cylindrical portion 32 is expanded outwardly to form a flange-shaped portion 32a. When the cylindrical portion 32 is attached to the front shaft 26, the flange-shaped portion 32a contacts the rear end 26a of the front shaft 26. It is made not to sneak further. Further, when the spring body 22 is attached to the front shaft 26 and attached to the tip portion 10b in the shaft cylinder 10 and screwed and fixed, the flange-like portion 32a is formed by the rib 12a on the inner peripheral surface of the ink tank 12. Positioned. That is, the flange-shaped portion 32a is sandwiched between the front shaft 26 from the front and the rib 12a from the rear, and the position of the rear end portion in the shaft tube 10 is fixed and provided at the front end portion. The valve body 20 is provided to be able to advance and retract in the front-rear direction.

  As shown in FIG. 3, the elastic portion 22 a of the spring body 22 is formed by roughly shaping two linear bodies into a spiral shape along four surfaces that are substantially rectangular in a cross-sectional view, and faces each other. The linear bodies along the two surfaces are oriented substantially perpendicular to the axial direction, and the linear bodies along the other two opposing surfaces are oriented obliquely with respect to the axial direction.

  The spring body 22 is formed by integrally forming the valve body 20 at the tip thereof.

  The cap 24 is demonstrated with reference to FIG.1, FIG.2, FIG.4 and FIG.

  A cap 24 is detachably fitted to the tip shaft 26 so as to cover the holding portion 28 and the coating body 16 from the tip shaft 26 at the tip of the applicator.

  The cap 24 has a grip portion 24a formed so that the outer diameter of the central portion in the axial direction is smaller than the outer diameters of the front and rear end portions in the axial direction and can be gripped with fingers.

  In this way, the grip portion 24a is formed in an annular shape so that the user can easily remove the grip portion 24a from the shaft tube 10 by picking it with a fingertip. Moreover, since it has the grip part 24a, when the user of the applicator tries to remove the cap 24 while wearing a glove, the grip part 24a that has been constricted is picked and securely held to apply force. Therefore, the cap 24 can be easily opened and closed without slipping, and it is particularly easy to use at work and construction sites.

  In addition, the constricted grip portion 24a is easier to hold than the conventional concavo-convex structure, so it is not removed. Further, the constricted grip portion 24a can be easily carried by tying a string.

  Further, since the cap 24 is constricted by the gripping portion 24a, the coated body 16 can be narrowed to a portion sealed to the outer periphery of the holding portion 28 or the like that is supported at the tip of the shaft tube 10, so that the cap 24 can be easily thinned.

The cap 24 has a generally hook-like shape with a grip portion 24 a whose front end is closed and the periphery of the central portion in the axial direction is recessed, and the rear end portion abuts on the flange 26 b of the front shaft 26. In addition, the clip 24b of the cap 24 is provided in an outer side part, and a user's pocket can be pinched | interposed with the clip 24b so that an applicator can be fixed.
Further, anti-slip means 24 c is formed on the outer surface portion of the cap 24.

  The anti-slip means 24 has flange-shaped irregularities formed by surrounding the bottom of the grip portion 24a in the circumferential direction and formed in parallel in a plurality of axial directions.

  Further, the tip of the concavo-convex convex portion of the anti-slip means 24c is formed at an acute angle (90 ° or less), and the cross section is formed in a rectangular shape. By forming the tip of the convex portion at an acute angle, the tip of the finger can be easily engaged even with gloves, and the cap can be easily removed with a small force. The acute angle can be variously formed by making the convex part of the concavo-convex shape into a chevron shape, a saw blade shape or the like in the cross section. For example, in Example 1, as shown in FIGS. 5A to 5C, the uneven shape of the anti-slip means 24 c on the outer peripheral surface of the bottom of the grip portion 24 a is 90 ° or less with the tip facing radially outward. It is formed on an annular rib having a sharp triangular cross section. Further, in Example 2, as shown in FIGS. 5D to 5F, the concave and convex end of the anti-slip means 24c on the outer peripheral surface of the bottom of the gripping portion 24a is 45 ° or less facing the radially rearward outer side. These are formed in an annular rib having an acute-angled triangular section. In the second embodiment, a rear-opening umbrella shape is presented.

  It is preferable that the surface of the shaft cylinder 10 is also subjected to anti-slip processing such as a concavo-convex shape. The anti-slip processing means may be provided with an elastic body such as rubber in addition to the uneven shape described above.

  Further, the clip 24b on the outer peripheral surface portion of the cap 24 is formed with a width narrower than the outer diameter of the grip portion 24a. If a clip 24b having a width smaller than the outer diameter of the grip portion 24a is provided on the outer peripheral surface portion of the cap 24, the clip 24b can perform the function of the clip 24b itself without being obstructed when the grip portion 24 is gripped. it can. The thickness of the cap 24 is preferably such that the cap top diameter> the gripping portion 24a> the width of the clip 24b.

Here, as shown in FIGS. 2 (a) and 2 (b), a holding portion 28 for holding the coated body is provided at the tip of the shaft tube, and the front side of the holding portion 28 is formed with a smaller diameter than the rear side. ing.
A structure in which the cap 24 is fitted to the front shaft 26 (first fitting structure) or the cap 24 is fitted to the front shaft 26 and the holding portion 28 in order to detachably fix the cap 24 to the applicator. The structure (second fitting structure) can be employed (FIG. 4 (h) shows the fitting rib 24h on the inner peripheral surface of the cap 24).

  In the first fitting structure, the inner peripheral surface of the cap 24 is fitted to the outer peripheral surface of the tip shaft 26 at a portion ahead of the flange 26b, and the outer peripheral surface of the front shaft 26 and the inner peripheral surface of the cap 24 face each other. The ribs 26h and 24h for fitting are respectively formed in an annular shape at the portions, and when the cap 24 is fitted, the ribs 26h and 24h are fitted to each other to prevent them from coming off and to be sealed.

Further, when the second fitting structure is adopted, the outer periphery of the small diameter holding portion 28 and the cap 24 are fitted with the outer periphery of the front shaft 26 and the ribs 26 h and 24 h of the inner periphery of the cap 24. Sealing structures 24d and 28d that keep the airtightness of the space around the coated body are formed at locations corresponding to the inner peripheral portion.
In the second fitting structure, the seal structure 24d of the inner peripheral portion of the cap 24 is formed on the inner peripheral side of the grip portion 24a. As described above, since the seal structures 24d and 28d are formed at the small-diameter fitting portions, the seal length can be shortened and the sealing performance can be improved as compared with the case of the large diameter.
In addition, the fitting rib of the code | symbol 24g is for enabling it to make it fit in the small diameter location of the rear-end part 10a of the main body 10, even when the cap 24 is unused.

  Further, the grip portion 24a of the cap 24 and the inner peripheral portion on the side of the cap 24 are formed such that the inner diameter around the coated body 16 is smaller than the inner diameter around the holding portion 28 and is closed at the tip, and the grip portion The outer peripheral portion 24e ahead of 24a is formed in a hollow collar shape that expands forward. With such a configuration, the outer peripheral portion 24e formed in the shape of the outer peripheral flange at the tip of the grip portion 24 is not thinned, and the cap 24 is not attracted when the resin is molded. A cap 24 is connected to the outer peripheral portion 24e and integrally formed.

  In addition, it is suitable that each part of the applicator according to the present invention is made of a resin material. In the first embodiment, the coated body 16 is a fiber bundle made of polyethylene terephthalate (PET), an open cell body, a molded body, or the like. The shaft tube 10, the tip shaft 26, the holding portion 28, and the cap 24 are made of polypropylene (PP). The spring body 22 and the stirring body 14 are made of polyacetal (POM), and the sponge 30 is made of urethane. In addition, each part is formed by injection molding, and the shaft tube 10 and the front shaft 26 can be formed with high precision by injection molding, so that the accuracy of the opposing screw coupling location is increased, and the rear end 10a The appearance quality is improved with less burr.

  The operation of the applicator according to the embodiment will be described.

  When the applicator is stored, the applicator body 16 faces downward, and the valve body 20 at the front end of the spring body 22 receives the valve bearing of the front shaft 26 by the elastic force toward the tip of the elastic portion 22a. The ink flow path 18 is closed in close contact with the portion 26c (the state shown in FIGS. 1 and 2).

  On the other hand, the ink is stirred during use. When the applicator is shaken, the stirrer 14 first moves in the ink tank 12 to stir the ink. At this time, since the rear end portion 14a of the stirring body 14 is enlarged in a flange shape, the stirrer 14 is caught by the inner step portion 32b of the cylindrical portion 32 at the rear end of the front shaft 26 as shown in FIG. Since it does not move to the valve body 20 side beyond it, the valve body 20 does not open by an impact.

  Then, the user presses the application body 16 against a desk or the like and causes the application body 16 to recede against the spring force of the spring body 22. As a result, the valve body 20 at the front end of the spring body 22 is separated from the valve receiving portion 26c of the front shaft 26 at the rear end of the application body 16, the ink flow path 18 is opened, and the application body 16 is passed through the sponge 30. Ink is supplied.

  According to the applicator according to the first embodiment described above, the stirrer 14 is formed in a rod shape with the rear end portion 14a having a diameter larger than that of the other part, and the spring body 22 includes A space 34 into which the agitator 14 can be inserted and removed is provided. In the shaft cylinder 10, the inner step 32b of the cylindrical portion 32 engages the rear end of the agitator 14, and the tip of the agitator 14 is a spring. It has a regulation receiving part which regulates so that it may not contact in the tip part of body 22.

  Therefore, when the stirrer 14 is shaken by shaking the applicator, the stirrer 14 does not hit the inside of the tip of the spring body 22, so that the valve body 20 does not open, and ink leakage or There is no blowout.

  Further, since the spring body 22 is formed by integrally forming the valve body 20 at the tip thereof, the number of parts can be reduced, and the molding and handling are facilitated.

  Further, if the cylindrical portion (regulation receiving portion) 32 formed of a contact portion whose inner diameter is smaller than the outer diameter of the rear end portion of the agitator 14 is integrally formed on the spring body 22 with a resin, There is no need for separate attachment, and molding and handling are easy to wipe out.

  Moreover, since it can be injection-molded that the stirring body 14 is resin, there exist effects, such as productivity being good.

  The applicator according to the present invention is not limited to the first embodiment, and can be variously modified. For example, the applicator of the present invention can be configured as in the second embodiment shown in FIG. In the applicator of FIG. 7, the same reference numerals are assigned to the same parts as those of the applicator of the first embodiment.

  In the second embodiment, the holding portion 28 is fitted to the tip of the front shaft 26 and the valve receiving portion 26c is integrally formed with the front shaft. However, the holding portion is formed integrally with the front end of the front shaft 26 and the valve receiving portion is formed. The valve receiving body 36 and the front shaft may be formed separately from each other, and the portion may be fitted into the front shaft 26.

  The valve receiving body 36 is formed with a substantially ring-shaped outer peripheral body 36a and a receiving portion 36b that protrudes inwardly in a flange shape from the inner peripheral surface thereof, and the rear portion 20b of the valve body 20 abuts obliquely. By disengaging, the valve is closed and opened.

  In the applicator according to the second embodiment, since the front shaft 26 and the valve receiver 36 are separated from each other, the material of the valve receiver 36 can be freely selected, and the sealing performance of the valve is improved. It is advantageous to obtain.

  In the applicator according to the present invention, a configuration in which no rib is formed in the ink tank and a configuration in which no clip is provided on the cap can be employed as in the second embodiment.

  The applicator of the present invention can be applied to an applicator for applying chemicals, cosmetics, and other application liquids to an object in addition to those for writing on various objects.

DESCRIPTION OF SYMBOLS 10 Shaft cylinder 10a Rear end part 10b Front end part 10c Female thread part 12 Ink tank 12a Rib 14 Stirring body 14a Rear end part 16 Application body 18 Ink flow path 20 Valve body 20a Front part 20b Rear part 20c Partition 22 Spring body 22a Spring body Elastic part 24 cap 24a grip part 24b clip 24c non-slip means 24d seal structure 24e front outer peripheral part 24f rear fitting part 24g guide 24h fitting rib 26 front shaft 26a front shaft rear end 26b front shaft flange 26c Front shaft valve receiving portion 26d Front shaft male screw portion 26h Fitting rib 28 Holding portion 28a Holding portion rear portion 28b Holding portion front portion 28c Holding portion rib 28d Holding portion seal structure 30 Sponge 32 Cylindrical portion 32a Flange-shaped part 32b Inner step part 34 Space 36 Valve receptacle (modification)
36a Outer peripheral body 36b Receptacle

Claims (9)

A cap that is closed on the front side and opened on the rear side, and covers the space around the coated body by covering the coated body provided at the tip of the barrel of the coating tool from the opening on the rear side. In the cap of the applicator that is detachably fitted to the barrel so that it can be sealed so as to keep airtight,
A cap for an applicator characterized in that the outer diameter of the central portion in the axial direction of the cap is smaller than that of the distal end portion in the axial direction.   The cap of the applicator according to claim 1, wherein anti-slip means is formed on the outer peripheral surface of the central portion in the axial direction of the cap.   The cap of the applicator according to claim 2, wherein the anti-slip means has an uneven shape.   The outer diameter of the central portion in the axial direction of the cap is narrower than the outer diameter of the front and rear end portions in the axial direction, and is a grip portion formed in a shape that can be gripped with fingers. Or the cap of the applicator according to 3.   The cap of the applicator according to claim 3, wherein the tip of the convex portion of the concavo-convex shape is formed at an acute angle.   The cap of the applicator according to any one of claims 1 to 5, wherein the surface of the shaft tube is anti-slip processed.   The applicator according to any one of claims 1 to 6, wherein a clip having a width smaller than an outer diameter of an axially central portion of the cap is provided on an outer peripheral surface portion of the cap. cap. A holding portion for holding the coated body is provided at the tip of the shaft tube, and the front side of the holding portion is formed to have a smaller diameter than the rear side, and the outer peripheral portion of the holding portion having a small diameter corresponds to the inner peripheral portion of the cap. A seal structure is formed to keep the airtightness of the space around the coated body between the places,
8. The applicator according to claim 1, wherein the seal structure of the inner peripheral portion of the cap is formed on an inner peripheral side of an axially central portion of the cap. cap.   The inner circumferential part of the cap in the axial direction and the inner peripheral part on the side of the cap are formed so that the inner diameter around the coated body is smaller than the inner diameter around the holding part and is closed at the tip, and more than the central part in the axial direction. The cap of the applicator according to claim 8, wherein the outer peripheral portion of the tip is formed in the shape of a hollow collar that expands the tip of the tip.

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