JPH0681790U - Applicator cap - Google Patents

Abstract

(57) [Abstract] [Purpose] An improved applicator cap that does not damage the pen tip when the cap is attached and that does not suffocate if accidentally swallowed by a child. provide. Also, an applicator cap that can be easily attached with a small force is provided. [Structure] An outer cylinder 2 and an inner cylinder 3 are provided, and the inner cylinder 3 is a fitting wall 1
It is integrated inside the outer cylinder 3 by 5. A notch-shaped opening 18 extending from the applicator insertion port 5 side to a position crossing the joint wall is provided on the side surface of the outer cylinder 2. When attaching the cap 1 to the applicator, the pen point 19
The position of can be confirmed. When the cap 1 is swallowed, the airway is secured by bypassing the opening 18.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cap for an applicator, and more particularly to a cap attached to the tip of a ballpoint pen, felt pen, line marker, glue, manicure or the like.

[0002]

[Prior art]

 A cap is attached to the tip of an applicator such as a ball-point pen or felt-tip pen to prevent the tip of the pen from drying and to prevent ink from getting dirty and getting dirty. The applicator cap generally has a double structure having an outer cylinder 100 and an inner cylinder 101 as shown in FIG. 10, and the inner cylinder 101 is built in the outer cylinder 100 via a joint wall 105. Has been adopted.

The double-structured cap is not only excellent in design, but also functionally preferable. That is, in the double-structured cap, the outer fitting portion 102 that fits with the liquid reservoir portion of the applicator is provided inside the outer cylinder 100, and the inner plug of the applicator fits with the inner surface of the inner cylinder. The inner fitting portion 103 is provided. The airtightness of the pen tip is mainly achieved by the inner cylinder 101 and the inner fitting portion 103. On the other hand, the outer cylinder 100 and the outer fitting portion 102 have a function of securely holding the liquid reservoir portion and preventing the inner fitting portion 102 from coming off.

Further, in the double-structured cap, the main function of the outer cylinder 100 is to prevent the cap from coming off as described above, and it is not necessary to make the airtightness a problem. A rib-shaped or groove-shaped fitting structure is adopted for the portion 102. In the double-layered cap, when the cap is attached to the applicator, the rib-like outer fitting portion 102 passes over the fitted portion provided in the liquid reservoir, and the overrun sound is generated. Also, the hand feel is remarkable. Therefore, the double-layer cap has a feeling of use that cannot be enjoyed with a single-layer cap. In addition, the double-structured cap has a practical effect that it can be confirmed by sound and feel that the cap is securely attached.

However, recently, there was a painful accident in which a child swallowed the cap and suffocated. In particular, the double-structured cap has a slightly larger outer diameter than the single-structured cap, which is just large enough for a child to swallow and obstruct the airway.

In consideration of this accident, the double-structured cap is required to have air permeability in the axial direction so that even if a child swallows it, it is possible to avoid suffocation. As a structure having air permeability in such an axial direction, as shown in FIG. 10, a structure in which a vent hole 106 is provided in a connecting wall 105 connecting the outer cylinder 100 and the inner cylinder 101 is generally adopted. There is.

[0007]

[Problems to be solved by the device]

 As described above, the double-structured cap has a favorable usability, and by providing the connecting wall 105 with the vent hole 106, the risk of suffocation is also reduced. However, the conventional double-structured cap has a problem that the pen tip is easily damaged when the cap is attached to the applicator.

That is, in the double-structured cap, the inner cylinder holding the front plug is built in the outer cylinder. Therefore, the inner cylinder has a structure that is difficult to see from the outside. Moreover, when the cap is attached, the opening of the cap is in the shadow of the applicator, so that the inner cylinder of the cap into which the tip plug is inserted is completely invisible to the user. Therefore, when the user attaches the cap to the applicator, the pen tip of the applicator may accidentally strike the connection wall 105 that connects the outer cylinder 100 and the inner cylinder 101. Worse yet, with the cap of the prior art, the vent hole 106 was provided in the connection wall 105 to prevent asphyxiation, so when the user accidentally hits the pen tip against the connection wall 105, Will enter the ventilation holes 106. When the user notices an error and tries to remove the applicator, there is a problem that the pen tip receives a bending force due to the vent hole 106, and the pen tip bends or, if it is severe, breaks.

In recent years, as a material for the pen nib, there is a tendency that a resin tip is adopted instead of the felt, which has been the mainstream in the past. There was a need for an urgent solution.

Another problem is that the double-structured cap inevitably requires a strong force for mounting the cap. That is, one of the advantages of the double-structured cap is that, as described above, the overcoming sound that is generated when riding over the fitted part and the feeling transmitted to the hand are remarkable. . However, in order to fully exert this effect, it is necessary to set a large tightening margin for the outer fitting portion. More specifically, the height of the ribs of the outer fitting portion must be increased. However, in the double-structured cap, since the outer fitting portion is provided in the outer cylinder portion having a large inner diameter, the fitting area is large and a strong force is required for fitting. Therefore, if the interference of the fitting part is increased with the double structure cap, there is a problem that it is difficult to attach to the applicator.

Further, in the double-structured cap, the outer fitting portion is provided in the outer cylinder portion having a large inner diameter, so that the molding accuracy of the outer fitting portion is inferior and the height of the ribs or the like forming the fitting portion is low. There is a large variation between lots. Therefore, the fitting part must be provided with a large tightening margin as needed with a margin. As a result, the double-structured cap has the contradictory problem that it becomes difficult to attach it to the applicator when trying to clarify the sound of overcoming.

If a resin having a low hardness is used as the resin for molding the cap, the force required for fitting is reduced and the above-mentioned problems are solved, but a cap molded with a resin having a low hardness is used. There is a fatal drawback in that the person easily deforms when force is applied, giving the user a cheap feeling.

In view of the above-mentioned problems of the prior art, the present invention has improved the double-structured cap so that the pen tip is not damaged when the cap is attached, and even if a child accidentally swallows it, it chokes. An object of the present invention is to provide a cap for an applicator that does not exist. In addition, an object of the present invention is to provide an applicator cap that produces a clear fitting sound and fitting feeling and can be easily mounted with a small force.

[0014]

[Means for Solving the Problems]

 A feature of the present invention to achieve the above-mentioned object is that the applicator cap has an outer cylinder and an inner cylinder, and the inner cylinder is integrated inside the outer cylinder via a joint wall. The applicator cap has an opening formed in the cylinder and straddling the joining wall.

Another invention to achieve the same object is to have an outer cylinder and an inner cylinder whose one end is open, and the inner cylinder is integrated inside the outer cylinder via a joint wall. In the tool cap, an opening is provided on the side surface of the outer cylinder near the opening end of the inner cylinder to be built in, and a groove extending in the axial direction in communication with the opening is provided on the outer peripheral surface of the outer cylinder. A characteristic applicator cap.

Further, in a preferred embodiment of the above-mentioned invention, an inner fitting portion is provided on the inner surface of the inner cylinder for fitting with the applicator to maintain airtightness, and the inner surface of the outer cylinder is fitted with the applicator. The applicator cap is characterized in that an outer fitting portion is provided, and an opening that straddles the joint wall is opened at an end of the outer cylinder.

[0017]

[Action]

 The applicator cap of the present invention according to claim 1 is a cap in which an inner cylinder is incorporated inside an outer cylinder, and has the same favorable usability as the prior art. In the applicator cap of the present invention, the outer cylinder is provided with an opening that straddles the joint wall, so that the inside of the cap can be seen from the outside through the opening. More specifically, the periphery of the opening of the inner cylinder inside the cap is seen through the opening. Therefore, the user can attach the cap to the applicator while observing the tip of the applicator and the periphery of the opening of the inner cylinder. Therefore, the user can accurately guide the pen tip into the opening of the inner cylinder when mounting the cap of the present invention on the applicator.

Further, since the cap according to claim 1 is provided with the opening across the joint wall, even if the cap is accidentally swallowed, the applicator insertion opening of the cap and the tip side of the outer cylinder are in communication with each other. There is. That is, when the cap is swallowed, the outer tube of the cap is in close contact with the inner wall of the throat to block the airway, but there is a gap only in the opening of the outer tube wall. Then, for example, the air that has entered from the applicator insertion opening will come from a part of the opening provided in the outer cylinder, more specifically, from the portion of the opening that is across the joint wall and corresponds to the applicator insertion opening side. , Once outside the cap. Then, the air flowing out of the cap passes through the gap between the inner surface of the throat secured by the opening and the cap, and sandwiches a part of the opening provided in the outer cylinder, that is, the joint wall of the opening, on the tip side. Return to the inside of the outer cylinder from the part corresponding to. That is, the air bypasses the opening provided in the outer cylinder and passes through the joint wall. Then, the air is discharged to the outside from the tip of the outer cylinder.

Therefore, even if a child accidentally swallows the applicator cap of the present invention, a minimum airway is secured. Therefore, in the applicator of the present invention, it is not necessary to make a hole in the joint wall.

Further, the cap according to claim 2 has the same operation as the cap according to claim 1 described above. That is, since the outer cylinder of the cap according to claim 2 is provided with an opening near the opening end of the inner cylinder contained therein, when the cap is attached to the applicator, the user is required to attach the tip of the applicator and the inner cylinder. You can attach the cap while observing the area around the opening. Further, the air that has entered from the applicator insertion port once exits the outside of the cap through the opening provided in the outer cylinder. Then, the air flows toward the tip side of the cap through the gap between the grooves formed on the inner surface of the throat and the outer peripheral surface of the outer cylinder.

Further, in the cap according to the third aspect, since the above-mentioned opening is opened to the end portion of the outer cylinder, the end portions of the outer cylinder are strip-shaped and not connected in an annular shape. Therefore, the end of the outer cylinder can be easily bent. Assuming that the cap according to claim 3 is attached to an applicator, the tip of the outer fitting portion first contacts a part of the writing tool. Here, since the end portion of the outer cylinder has the strip shape as described above, the end portion easily spreads outward by pushing the cap. Then, when the cap is pushed in to the specified position, the outer fitting part fits with the fitting part such as the groove provided in the applicator, and the end of the outer cylinder that has spread outward returns to the normal state. To do. At this time, the outer fitting part emits a clear fitting sound and the vibration of the fitting is transmitted to the user's hand.

[0022]

【Example】

 Hereinafter, a specific embodiment of the present invention will be described. FIG. 1 is a front view of an applicator cap according to a specific embodiment of the present invention. FIG. 2 is a view on arrow A in FIG. FIG. 3 is a BB cross-sectional view of the applicator cap of FIG. FIG. 4 is a partial cross-sectional view of the cap and the applicator showing the behavior of the cap of FIG. 1 when attached to the applicator. FIG. 5 is a partial cross-sectional view of the cap and the applicator, showing the behavior when the cap of FIG. 1 is attached to the applicator having a different shape. FIG. 6 is a cross-sectional view showing a situation when the applicator cap of FIG. 1 is clogged in the throat. FIG. 7 is a front view of a cap for applicator according to a modified embodiment of the present invention.

1 to 6, reference numeral 1 denotes an applicator cap according to a specific embodiment of the present invention. The cap 1 of the present invention is formed by injection molding using a thermoplastic resin such as polypropylene or polyacetal, and an outer cylinder 2 and an inner cylinder 3 are integrally provided. The outer cylinder 2 is a cylinder with both the front end and the rear end opened, and the rear end opening corresponding to the lower side of FIG. 3 serves as the applicator insertion opening 5. The outer diameter of the outer cylinder 2 is substantially equal to the outer diameter of the liquid reservoir 8 of the applicator 6 shown by the chain double-dashed line. The inner diameter of the outer cylinder 2 is substantially equal to the outer diameter of the tip portion 10 of the liquid reservoir 8. An outer fitting portion 11 is provided on the inner surface of the outer cylinder 2 near the applicator insertion opening 5. The outer fitting portion 11 used in this embodiment is a rib having a short length, and is provided on the inner surface of the outer cylinder 2 at four locations at equal intervals.

The inner cylinder 3 is a cylinder whose outer diameter is considerably smaller than the inner diameter of the outer cylinder 2 and whose total length is shorter than that of the outer cylinder 2. The inner cylinder 3 has an opening 12 at one end and is closed at the other end. ing. An inner fitting portion 13 is provided on the inner peripheral surface of the inner cylinder 3 near the opening 12. Here, a part of the inner peripheral surface of the inner fitting portion 13 projects inward, and is formed in an annular shape without a cut on the inner peripheral surface. The inner fitting portion 13 has an undercut shape with respect to the tip plug of the applicator, etc. By fitting the inner fitting portion 13 with the tip plug of the applicator, etc. Is kept airtight.

The inner cylinder 3 is concentrically arranged inside the outer cylinder 2 with its tip aligned with the outer cylinder 2. The two are integrated via the joint wall 15. Here, the joint wall 15 used in the present embodiment connects the periphery of the opening 12 of the inner cylinder 3 and the inner peripheral surface of the outer cylinder 2 and has a disk shape. Therefore, the inside of the cap 1 is partitioned by the joining wall 15 into the applicator insertion port 5 side and the tip end side 14 in the longitudinal direction.

Further, as described above, since the total length of the inner cylinder 3 is shorter than that of the outer cylinder and the positions of the tips of both are aligned, the applicator insertion port 5 side on the junction wall 15 side, It has a single-layer structure with only the outer cylinder 2. On the other hand, the joint wall 15 to the front end side 14 have a double structure in which the inner cylinder exists inside the outer cylinder 2. Further, since the outer diameter of the inner cylinder 3 is considerably smaller than the inner diameter of the outer cylinder 2, an annular space 16 is formed between them. The joint wall 15 used in this embodiment is not provided with a ventilation hole anywhere as in the joint wall of the prior art.

The important point here is that in the applicator cap 1 of this embodiment, the opening 18 is formed in a part of the side surface of the outer cylinder 2. In the present embodiment, the opening 18 is formed to be long in the axial direction and has a notch shape in which one end is opened to the end portion of the outer tube 2 on the applicator insertion port 5 side. The opening 18 is provided at least at a position where it covers the joint wall 15. In other words, the opening 18 extends straight in the axial direction from the end on the applicator insertion port 5 side, reaches the position where the inner cylinder 3 exists beyond the joint wall 15. That is, the opening 18 extends from the end on the applicator insertion port 5 side to the side surface of the annular space 16. Therefore, the joint wall 15 has no member to be joined at the opening 18, and the end surface 22 of the joint wall 15 is exposed. Further, the opening 18 has a portion 24 which is opened to the applicator insertion port 5 side and a portion 26 which is opened to the annular space 16 with the joint wall 15 interposed therebetween. In the applicator cap 1 of the present embodiment, four openings 18 are formed in the outer cylinder 2 at equal intervals. In the cap 1 of this embodiment, the length of the opening 18 from the joining wall 15 to the tip side is substantially equal to the width of the opening 18.

Next, the operation of the applicator cap 1 of the present embodiment will be described. First, the operation during normal use will be described. The applicator 6 having a preferred shape to which the applicator cap 1 of the present embodiment is attached is such that a tip plug 20 of resin or the like is attached to the tip of the liquid reservoir 8 as shown in FIG. The tip of the liquid reservoir 8 is formed in a stepped shape. Further, the tip portion 10 of the liquid reservoir 8 is formed with a taper that gradually becomes thinner toward the tip. An annular fitting groove 23 is provided in the tip portion 10 of the liquid reservoir 8. In many cases, an annular protrusion 55 as shown in FIG. 5 is provided instead of the annular fitting groove 23. On the other hand, the tip plug 20 is provided with a taper portion 25 at its most distal end. The plug 20 has a cylindrical shape with the same diameter except for the tapered portion 25.

The cap 1 of this embodiment is similar to that of the prior art in that the tip of the applicator 6 is inserted from the applicator insertion port 5. That is, the pen tip 19 is inserted into the inner cylinder 3 of the cap 1, the inner fitting portion 13 of the inner cylinder 3 is brought into close contact with the tip plug 20 of the applicator 6, and the inner tip of the inner cylinder 3 is kept airtight. Prevent drying of 19. Further, the outer fitting portion 11 of the cap 1 fits with the fitting groove 23 or the projection 55 in the tip portion 10 of the liquid reservoir 8 and holds the cap 1 firmly so that it does not fall off the applicator 6. To do.

The characteristic action of the applicator cap 1 of the present embodiment is exhibited when the cap 1 is attached to the applicator 6. That is, the tip of the applicator 6 is brought close to the applicator insertion port 5 of the cap 1, and the pen tip 19 is first inserted into the outer cylinder 2 through the applicator insertion port 5. Here, in the cap 1 of the present embodiment, an opening 18 is provided on the side surface of the outer cylinder 2, and the opening 18 has a notch shape that extends in the axial direction from the applicator insertion port 5, so that the pen The user can see the nib 19 through the opening 18 even when the nib 19 enters the inside of the outer tube 2. Further, since the opening 18 is extended to a position beyond the joint wall 15, the user can see the surface of the joint wall 15 on the applicator insertion port 5 side together with the pen tip 19. Therefore, the user can guide the pen tip 19 to the opening 12 of the inner cylinder 3 while confirming the position of the pen tip 19 and the surface of the joint wall 15 on the applicator insertion port 5 side.

Then, when the pen tip 19 enters the inner cylinder 3 and the user still presses the applicator 6 against the cap 1, the taper portion 25 formed at the tip portion of the tip plug 20 of the applicator 6 becomes The inner fitting portion 13 of the inner cylinder 3 is pushed open. At this time, the tip portion 10 of the liquid reservoir 8 has already entered the outer cylinder 2 of the cap 1. Then, the tips of the ribs of the outer fitting portion 11 come into contact with the surface of the tip portion 10 of the liquid reservoir 8. Here, in the applicator 6 of the present embodiment, the opening 18 is open to the applicator insertion port 5 and the end portion of the outer cylinder 2 has a strip shape. The ends are easily spread out as shown in FIG. 4 or FIG.

Then, when the cap 1 is pushed further in, the outer fitting portion 11 fits into the fitting groove 23 of the front plug 10 with a clear fitting sound and a fitting feeling. Further, when the writing instrument having the annular projection 55 on the liquid reservoir 8 as shown in FIG. 5 is mounted, the user can get over the projecting ridge 55 of the front plug 10 with a clear overcoming sound and a feeling of wearing. As a result, the cap 1 is firmly fixed to the applicator 6. In addition, the expanded end of the outer cylinder 2 returns to the original state. In addition, in the cap 1 of the present embodiment, the inner cylinder swings when the applicator 6 is inserted, and has a function of adjusting a slight misalignment.

Next, the operation when the cap of this embodiment is accidentally swallowed will be described. It is assumed that a child accidentally swallows the cap 1 of the present embodiment and the cap 1 is in the pharynx, that is, the cap 14 is stopped toward the opening of the trachea 29 as shown in FIG. At this time, the outer peripheral surface of the outer cylinder 2 of the cap 1 is brought into close contact with the throat muscles with almost no space. However, since the cap 1 of this embodiment is provided with the opening 18 on the side surface of the outer cylinder 2, at least only the opening 18 is not in close contact with the throat muscle, and a slight gap 30 is formed. Is formed.

In the cap 1 of the present embodiment, the opening 18 is provided at a position straddling the joint wall 15, so that the applicator insertion port 5 side of the outer cylinder 2 and the cap tip side of the joint wall 15 are provided. A certain annular void portion 16 communicates with each other through a gap 30 formed in the opening 18 portion. Therefore, the air that has entered from the mouth 31 and the nasal cavity 32 enters from the applicator insertion opening 5 and escapes to the opening 18. Then, through the gap 30 between the throat muscle formed in the opening 18 and the portion 26 of the opening 18 that opens into the void portion 16, it enters the annular void portion 16 of the cap 1 again. Then, it can pass through the annular space 16 toward the tip of the cap 1 and enter the trachea 29. Therefore, even if a child accidentally swallows the cap 1 of this embodiment, the airway is secured.

In the above embodiments, the opening 18 provided in the cap has a configuration in which the end portion is open to the applicator insertion port 5 side of the outer cylinder 2. This configuration has an effect that the end portion of the outer cylinder opens outward when the cap is attached, and the attachment is easy. Therefore, the height of the rib of the outer fitting portion of the cap can be set high, and a clear fitting sound can be generated. In addition, the cap can be molded using a resin having a high hardness, and the cap can have a high-grade feeling, which is an extremely preferable configuration. Furthermore, in this type of cap, since the molding die is often divided and molded in the longitudinal direction of the cap, the molding die is not undercut, which is convenient in terms of molding.

However, when the force required when inserting the cap is reduced by adopting other means, the opening 18 provided in the cap is not necessarily open to the applicator insertion port 5 side of the outer cylinder 2. No need. That is, even if the cap 50 of FIG. 7 is provided with the elongated hole-shaped opening 51 extending over the joint wall 15, the pen tip or the like can be seen when the cap 50 is attached. Also, if swallowed, the airway will be secured. Therefore, even if the cap 50 of this embodiment is swallowed, it does not suffocate.

In the structure of the present invention, the opening area from the joint wall 15 of the openings 18 and 51 to the tip side 14, that is, the area of the openings 26 and 52 that open to the annular space 16 is, when the cap is swallowed. Since it becomes a passage for air, it is preferable that the opening of the portion is large. However, in order to secure the opening area, it is necessary to avoid providing a long opening in the longitudinal direction to prevent mischief. That is, if the opening is made longer, when the cap is swallowed, the inner wall of the throat protrudes into the opening as shown by 36 in FIG. Therefore, if the opening on the distal side from the joint wall 15 is lengthened, the portion of the joint wall 15 at the core is blocked by the protruding throat muscle.

Further, if the opening on the tip side from the joint wall 15 is unnecessarily lengthened, the rigidity of the outer cylinder 2 is significantly lowered, and not only does it give a cheap feeling, but also when it is attached to the applicator 6, the applicator 6 is deformed. It becomes difficult to put on. Therefore, the length of the opening from the joining wall 15 to the tip side is preferably about 3 times the opening width or less. Most preferably, the length of the opening from the joining wall 15 to the tip side is equal to the opening width as in this embodiment. When designing the cap of the present invention, the lengths of the openings 18 and 51 from the joining wall 15 to the tip side should be within the above-mentioned range as much as possible, and conversely, the openings 18 and 51 should extend over the entire length of the outer cylinder 2. You should definitely avoid designing it.

In the above-described embodiment, the configuration in which the joint wall 15 is provided in the opening 12 of the inner cylinder is disclosed. The applicator cap of the present invention is not limited to the one in which the joint wall 15 is provided in the opening 12 of the inner cylinder 3, but of course is provided at a position closer to the tip side 14 from the opening 12 of the inner cylinder 3. It can also be applied to things. However, if the joint wall 15 is extremely separated from the opening 12 of the inner cylinder 3, if a notch-shaped one is used as the opening of the outer cylinder, the rigidity of the outer cylinder is remarkably reduced and it cannot be put to practical use. Then, an embodiment in which it is preferable to apply the joint wall 15 to a cap provided at a position apart from the opening 12 of the inner cylinder 3 will be described. Note that the same configurations as those of the caps of the above-described embodiments are denoted by the same reference numerals, and duplicate description will be omitted.

FIG. 8 is a sectional view of an applicator cap according to a specific embodiment of the present invention. FIG. 9 is a perspective view of the applicator cap of FIG. 8. In the applicator cap 60 of this embodiment, the joint wall 61 is provided at the tip of the cap 60. In other words, in the applicator cap 60 of the present embodiment, the tip of the outer cylinder 62 is closed by the joint wall 61.

In the applicator cap 60 of the present embodiment, the opening 63 provided on the side surface of the outer cylinder 62 extends from the end of the outer cylinder 62 on the applicator insertion port 5 side to the open end 64 of the inner cylinder. It is provided to the side surface in the vicinity. A large number of ridges 65 are provided on the outer peripheral surface of the outer cylinder 62. The ridge 65 is provided in the axial direction as shown in FIG. 9, and its position is provided from the periphery of the end portion of the opening 63 on the tip side to the tip side 14. The height of the ridge 65 is approximately equal to the wall thickness of the outer cylinder 62. The ridges 65 are provided on the outer peripheral surface of the outer cylinder 62 at equal intervals, and the grooves 67 are formed between the ridges 65. Then, the above-mentioned opening 63 is opened in the groove 67, and the opening 63 communicates with the groove 67 formed by the ridge 65.

When the applicator cap 60 of the present embodiment is attached to the applicator, the tip of the applicator and the opening 63 of the inner cylinder 68 are seen from the opening 63 provided on the outer peripheral surface of the outer cylinder 62. You can do it while checking its position. Therefore, the pen tip of the applicator does not get caught between the inner cylinder 68 and the outer cylinder 62.

Next, a case where the applicator cap 60 of the present embodiment is accidentally swallowed will be described. When the applicator cap 60 of the present embodiment is swallowed, the cap 60 is caught on the inner wall of the throat, but the outer surface of the outer cylinder does not completely adhere to the inner wall of the throat. That is, in the applicator cap 60 of the present embodiment, since the ridge 65 is provided on the outer circumference of the outer cylinder 62, the tip of the ridge 65 contacts the inner wall of the throat and is formed by the ridge 65. The groove 67 does not adhere to the inner wall of the throat. Therefore, the air enters the inside of the cap 60 through the applicator insertion port 5 and exits the outside of the outer cylinder 62 through the opening 63, as shown by the arrow in FIG. 9. The air discharged from the opening 63 enters the groove 67 formed by the ridge 65. Then, the air passes through the groove 67 and escapes to the front end side 14 of the cap 60. Therefore, even if the applicator cap 60 of this embodiment is swallowed, the airway is secured and choking is avoided.

Also in this embodiment, the opening 63 does not necessarily have to be opened at the end of the outer tube 62 on the applicator insertion port 5 side. In addition, a structure with a long opening length lowers the rigidity of the cap and should be avoided.The opening length is preferably less than half of the total length of the cap, and the most preferable length is the total length of the cap. It is about one third.

[0045]

[Effect of device]

 In the applicator cap according to claim 1, since the outer cylinder is provided with an opening that extends over the joint wall, the inside of the cap can be seen through the opening. Therefore, the cap can be attached while looking at the opening of the pen tip and the inner cylinder, and there is an effect that the pen tip can be accurately guided into the opening of the inner cylinder. Therefore, there is an effect that the pen tip is not abutted against the joint wall to damage the pen tip. Further, since the applicator cap of the present invention does not need to have a vent hole in the joint wall, there is no danger of the pen tip getting stuck in the vent hole. Similarly, in the invention according to claim 2, since the opening is provided on the side surface of the outer cylinder and near the opening end of the inner cylinder, the opening position of the pen tip and the inner cylinder should be confirmed when the cap is attached. It has the effect of not damaging the pen tip.

In addition, in the applicator cap according to the first aspect, since the opening extending over the joint wall is provided, the front and rear of the joint wall communicate with each other through the opening. Therefore, even if the cap of the present invention is accidentally swallowed, the airway is secured, and it has an excellent effect of avoiding suffocation. Similarly, in the applicator cap according to a second aspect of the present invention, since the groove that extends in the axial direction in communication with the opening is provided on the outer peripheral surface of the outer cylinder, even if the cap is swallowed, the opening is connected to the groove. Airway is secured. Therefore, even if the cap of the present invention is swallowed, it has an excellent effect of not causing suffocation.

Further, in the cap according to claim 3, since the opening is open to the end portion of the outer cylinder, the end portion of the outer cylinder has a strip shape and easily bends outward, so that the applicator is inserted into the cap. The edges widen when you do. Therefore, the cap according to claim 3 has an effect that the cap can be attached with a small force. Therefore, the cap according to claim 3 has an effect that the tightening margin of the outer fitting portion can be set to be large, and a cap having a clear fitting sound and a fitting feeling can be realized. Further, the cap according to claim 3 can be formed by using a hard resin as a raw material, and has an effect that a high-quality cap can be provided to the market.

[Brief description of drawings]

FIG. 1 is a front view of an applicator cap according to a specific embodiment of the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a cross-sectional view of the applicator cap of FIG.

FIG. 4 is a partial cross-sectional view of the cap and the applicator showing the behavior of the cap of FIG. 1 when attached to the applicator.

FIG. 5 is a partial cross-sectional view of the cap and the applicator, showing the behavior when the cap of FIG. 1 is attached to the applicator having a different shape.

6 is a cross-sectional view showing a situation when the applicator cap of FIG. 1 is clogged in the throat.

FIG. 7 is a front view of the applicator cap of a modified embodiment of the present invention.

FIG. 8 is a cross-sectional view of an applicator cap according to a specific embodiment of the present invention.

9 is a perspective view of the applicator cap of FIG. 8. FIG.

FIG. 10 is a cross-sectional view of a conventional applicator cap.

[Explanation of symbols]

 1,50,60 Applicator cap 2,62 Outer cylinder 3,68 Inner cylinder 45 Applicator insertion port 11 Outer fitting part 15,61 Joint wall 16 Annular void 18,51 Opening 65 Protrusion 67 Groove

Claims (3)

[Scope of utility model registration request] 1. An applicator cap having an outer cylinder and an inner cylinder, wherein the inner cylinder is integrated with the inside of the outer cylinder via a joint wall, and an opening extending over the joint wall on a side surface of the outer cylinder. The applicator cap is characterized by being provided with. 2. An applicator cap having an outer cylinder and an inner cylinder having an opening at one end, the inner cylinder being integrated with the inside of the outer cylinder via a joint wall, and the applicator cap is incorporated in a side surface of the outer cylinder. An applicator cap characterized in that an opening is provided near the opening end of the inner cylinder, and a groove that extends in the axial direction in communication with the opening is provided on the outer peripheral surface of the outer cylinder. 3. The inner surface of the inner cylinder is provided with an inner fitting portion for fitting with the applicator to maintain airtightness, and the inner surface of the outer cylinder is provided with an outer fitting portion for fitting with the applicator. The applicator cap according to claim 1 or 2, wherein the opening provided on the side surface of the outer cylinder is open at an end of the outer cylinder.