JP2002200884A - Cap for coating tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap single body or caps even under the state being connected with each other, in which stable air flow passages are ensured and consequently the safety of which is improved. SOLUTION: In a pair of the connectable caps 1 for the coating tool to be installed at both the ends of the coating tool, at least at one cap 1, an outer tubular part 10 and an inner tubular part 11 are integrally formed with each other under the state that the blocked end 11a side of the inner tubular part with its blocked one end is projected beyond one end of the outer tubular part 10 having its inner diameter layer than the outer diameter of the inner tube part 11 so as to be supported by supporting parts 10d provided between the inner peripheral wall 10a of the outer tubular part 10 and the outer peripheral wall 11b of the inner tubular part 11. On the outer peripheral wall 11b of the inner tubular part between a position apart by the predetermined length d from the supporting parts 10d and the blocked end 11a of the inner tubular part 11, a plurality of projections 11c are so constituted as to be provided. In addition, at the supporting parts 10d, axially extending communicating holes 10e are so constituted as to be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap for an applicator to be mounted on various applicators such as a ball-point pen, a felt-tip pen and a marker. Related to improved safety.

[0002]

2. Description of the Related Art In recent years, twin type ball-point pens, felt-tip pens, and markers have been widely used in which coating portions having different shapes are provided at both ends of a main body shaft. In many of such applicators, usually, one cap is removed, and the removed cap is put on the other cap and connected so as not to be lost. By the way, since the cap of such an applicator has a small shape, infants and children often play with their hands, which may cause accidents such as accidental swallowing and suffocation. Therefore, it is required by safety standards to provide a through hole for ensuring a predetermined air flow rate according to the shape of the cap. By providing such a through hole in the cap, even if swallowed by mistake, a predetermined air flow path can be secured through the through hole, and necessary treatment can be performed while maintaining breathing. is there. As described above, applicators that comply with safety standards have been commercialized to protect precious lives.

[0003]

However, in the cap provided with the through hole described above, although the air flow path is secured, the cap swallowed by mistake may catch on the throat or the trachea, and the throat wall or the airway may be damaged. A problem that the through-hole was blocked by a pipe wall or the like was likely to occur. In addition, foreign matters such as residues are often clogged in the through-holes, making it impossible to obtain a required air flow rate, and there is a problem in terms of safety. Such a problem also occurs when the caps are connected to each other, and improvement has been desired from the viewpoint of safety. The present invention has been proposed in view of such a conventional point of view, and provides an applicator cap capable of stably securing a predetermined air flow path even when the caps alone or the caps are connected to each other. It is intended to be.

[0004]

The present invention proposed to achieve the above object is a pair of connectable applicator caps mounted on both ends of an applicator, wherein at least one of the caps comprises: The closed end side of the inner cylinder portion having one end closed is protruded from one end of the outer cylinder portion having an inner diameter larger than the outer diameter of the inner cylinder portion, so that the outer cylinder portion has an inner peripheral wall and an inner cylinder portion outer peripheral wall. A plurality of protrusions are provided on the outer peripheral wall of the inner cylinder portion between a position separated from the support portion by a predetermined length and a closed end of the inner cylinder portion. The support portion is provided with a communication hole in the axial direction, and when the caps are connected by externally engaging the inner peripheral wall of the outer cylindrical portion of the other cap with the protrusion of the inner cylindrical portion of the other cap, the other Formed between the inner peripheral wall of the outer cylindrical portion of the cap and the projections Communication hole of the one cap,
In addition, the internal space between the caps is configured to communicate with each other via a gap formed between the outer peripheral wall of the outer cylindrical portion and the outer peripheral wall of the inner cylindrical portion of the one cap.

According to this structure, a gap is formed between the outer peripheral wall of the inner cylindrical portion and the inner peripheral wall of the outer cylindrical portion, and a communication hole is provided in the support portion in the axial direction. The internal space of the cap communicates with the outside via the gap. Further, a projection is provided on the outer peripheral wall of the inner cylinder portion between a position slightly away from the support portion (by a predetermined length) and the closed end of the inner cylinder portion. Thus, even when the cap is held on the throat or trachea, the problem that the throat wall or trachea wall blocks the communication hole only by abutting the throat wall or trachea wall with the projection is eliminated. In addition, since the protrusion is located near the communication hole, foreign matters such as residues are less likely to be clogged in the communication hole, and the air flow path can be stably secured. According to this configuration, a stable air flow path is secured by the cap alone, but it is of course also effective when the cap is connected. That is, the caps can be connected to each other by externally engaging the inner peripheral wall of the outer cylinder portion of the other cap with the protrusion of the inner cylinder portion of the one cap. In this connection state, the internal spaces of the caps communicate with each other via a gap (flow path) formed between the inner peripheral wall of the outer cylindrical portion of the other cap and the projection and the communication hole of the one cap. A stable air flow path is secured. The protrusion provided on the outer peripheral wall of the inner cylinder portion may be formed between the position separated from the support portion by a predetermined length and the closed end of the inner cylinder portion, as long as the outer cylindrical portion inner peripheral wall of the other cap can be circumscribed and engaged. It can be provided in an appropriate number and shape.

In the present invention, the projections may be provided radially at predetermined intervals on the outer peripheral wall of the inner cylindrical portion. By providing the projections radially on the outer peripheral wall of the inner cylinder, the gap (flow path) formed between the projections is also formed radially, and an average air flow path is secured along the outer peripheral wall of the inner cylinder. You. Further, by providing the projections radially, the projections can be stably engaged with the inner peripheral wall of the outer cylinder portion of the other cap, and the connection state is stabilized. The number of projections radially provided on the outer peripheral wall of the inner cylinder may be an appropriate number. For example, by reducing the number of projections to about five to eight,
Even if one gap (flow path) is clogged with foreign matter, a sufficient air flow path can be secured through another gap, and the caps can be stably connected. Further, the projection provided on the outer peripheral wall of the inner cylinder may be provided in only one step radially, or may be provided in two or more steps.

[0007] In the present invention, the communication hole may be provided in the support portion in the axial direction corresponding to the position of the projection. That is, a projection may be provided on the outer peripheral wall of the inner cylindrical portion near the support portion, and a communication hole may be provided in the axial direction at a position where each projection is orthogonally projected onto the support portion. According to this configuration, since the communication hole and the end of the projection are arranged to face each other with a small distance (predetermined length), even if the cap is held on the throat or the trachea, the throat wall or the trachea wall is formed. The communication hole is not blocked by the throat wall or the tracheal wall only by contacting the protrusion. Further, since the communication hole and the projection face each other with a slight space therebetween, foreign matter is less likely to be clogged in the communication hole. In addition, since the communication hole and the projection face each other with a slight space therebetween, the gap (flow path) formed between the projections and the communication hole are not arranged linearly. This reduces the problem that foreign matter staying in the gap moves in the gap and directly blocks the communication hole.

In the present invention, the support portion may be provided at one end of the outer cylindrical portion. That is, by providing a support portion at one end of the outer cylinder portion that connects the inner peripheral wall of the outer cylinder portion and the outer peripheral wall of the inner cylinder portion, the structure is simplified as compared with a configuration in which the support portion is provided on the inner side of the outer cylinder portion. And the same effects as those of the present invention described above can be obtained.

In the present invention, the caps may be formed in the same shape and connected to each other so as to be able to communicate with each other. That is, by making the pair of caps have the same shape, the protrusion of the inner cylinder portion of one cap is connected by circumscribing the inner peripheral wall of the outer cylinder portion of the other cap, and conversely, the inner cap of the other cap is The inner peripheral wall of the outer cylinder portion of one of the caps can be connected to the projection of the cylinder portion by circumscribing the inner circumferential wall of the outer cylinder portion.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an applicator cap 1 according to the present embodiment. 1 (a) is a perspective view showing the cap 1, FIG. 1 (b) is a sectional view taken along the line AA of FIG. 1 (a), and FIG. 1 (c) is a direction B in FIG. 1 (a). Arrow view, FIG.
1D is a cross-sectional view taken along the line CC of FIG. 1B, and FIG. 1E is a cross-sectional view taken along the line DD of FIG. 1B.

In the cap 1 of the present embodiment, the closed end 11a side of the inner cylindrical portion 11 having one end closed is protruded from one end of the outer cylindrical portion 10 having an inner diameter larger than the outer diameter of the inner cylindrical portion 11. And a support portion 10 provided at one end of the outer cylindrical portion 10.
d and formed integrally. The support 10
d and the closed end 11 of the inner cylindrical portion 11
a on the outer peripheral wall 11b of the inner cylindrical portion 11 between
And a communication hole 10e is provided in the support portion 10d in the axial direction.

More specifically, the projections 11c are formed on the outer peripheral wall 11b of the inner cylindrical portion at equal intervals radially in the circumferential direction.
A gap 11g having a length d is provided between each of the protrusions 11c and the support portion 10d. This projection 1
1c has the same length in the circumferential direction and the interval between the protrusions 11c. The support portion 10d is provided with six communication holes 10e having substantially the same cross-sectional shape as the protrusion 11c and extending along the protrusion 11c so as to correspond to the position of the protrusion 11c. That is, the end of the projection 11c and the opening of the communication hole 10e face each other with a gap 11g (interval d) therebetween, and the communication hole 10e penetrates the support portion 10d in the axial direction and the cap 1c.
Is configured to communicate the internal space with the outside. The cap 1 is formed as a molded product using a synthetic resin material. For example, in a molding die, injection molding can be performed using a punching die in which a pin that opens the communication hole 10e and a pin that forms a space between the projections 11c are rubbed against each other. In addition, instead of the punching die, it is also possible to perform injection molding using a split die.

According to the cap 1 (single cap) having such a structure, when swallowed by mistake and held on the throat or the trachea, the throat wall or the trachea wall (not shown) becomes the outer cylindrical portion 10 or the inner cylindrical portion. 1
1 so as to press. However, the protrusion 11c is formed on the outer peripheral wall 11b of the inner cylindrical portion 11 substantially.
b, a flow path (gap) 11f is formed between the throat wall or trachea wall and the inner cylindrical portion outer peripheral wall 11b. This flow path 11f has a gap 11g at the end of the projection 11c.
The gap 11g is connected to the communication hole 10e.
That is, the flow path 11f and the communication hole 10e are configured to communicate with each other by bending the flow path via the gap d. Therefore, even when the single cap 1 is accidentally swallowed and the throat wall or the tracheal wall comes into close contact with the outer tube 10 and the inner tube 11,
It is possible to form an air flow path through the flow path 11f, the communication hole 10e, and the gap 10c to maintain breathing.

In particular, in the cap 1 of the present embodiment, as described above, the end of each projection 11c and the opening of the communication hole 10e face each other with a gap 11g (interval d). A gap 11g between the communication hole 10e and the flow path 11f.
The air flow path is bent at the portion (see FIG. 1).
(Refer to the arrow of the air flow path in (a)). That is, since the flow path 11f and the communication hole 10e are not linearly arranged, even if swallowed by mistake, foreign matter such as the residue flowing into the flow path 11f moves as it is and clogs the communication hole 10e. Problems are reduced, and a stable air flow path can be secured.

As described above, the cap 1 of the present embodiment has extremely high security by itself, but also takes into account the safety when the caps 1 are connected to each other. FIG. 2 is a perspective view showing a state in which an air flow path is formed when the applicator caps 1 shown in FIG. 1 are connected to each other. In the figure, the two caps are distinguished as a cap 1a and a cap 1b, and are shown as being in the middle of connection before reaching a completely connected state for convenience of explanation. Coating device caps 1a, 1
When connecting b, the outer cylinder part 10 of the cap 1b is connected to the inner cylinder part 11 of the cap 1a from the open end 10b side. That is, the caps 1a and 1b are pressed and inserted into the projections 11c provided on the inner cylindrical portion 11 of the cap 1a so that the inner peripheral walls 10a of the outer cylindrical portion 10 of the cap 1b are brought into close contact with each other. connect.

When the caps 1a and 1b are connected in this manner, six flow paths 11f are formed between the inner peripheral wall 10a of the outer cylindrical portion of the cap 1b and the six projections 11c. This flow path 11f is basically the same as that formed when the throat wall and the trachea wall are in close contact with each other when the single cap 1 is accidentally swallowed. Therefore, the cap 1a and the cap 1b
Is connected to the open end 1 of the outer cylindrical portion 10 of the cap 1a.
0b through the internal space, the gap 10c, the communication hole 10e,
An air flow path L is formed through the flow path 11f, the internal space of the cap 1b, the gap 10c, and the communication hole 10e, and it is possible to secure a stable air flow. In particular, FIG.
If the caps 1a and 1b are accidentally swallowed in the connected state shown in (1), the throat wall and the tracheal wall adhere to the inner cylindrical portion 11 of the cap 1b. As in the case, a sufficient air flow path is secured by the flow path 11f.

Since the caps 1a and 1b have the same shape, the outer cylindrical portion 10 of the cap 1a is placed on the inner cylindrical portion 11 of the cap 1b from the open end 10b side, contrary to the connection shown in FIG. They can also be connected, and a similar air flow path L can be formed. Cap 1 shown in this embodiment
Shows a configuration in which six protrusions 11c are provided radially on the outer peripheral wall 11b of the inner cylindrical portion along the circumferential direction. But,
The present invention is not limited to such a configuration.

FIG. 3 is a perspective view showing a cap 2 according to an embodiment in which the above-described cap 1 is modified. In this example, six protrusions 11c are provided radially along the circumferential direction on the outer peripheral wall 11b of the inner cylinder portion in two stages. Note that the same components as those of the cap 1 shown in FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted. According to the cap 2, similarly to the cap 1, the air flow path can be stably secured both in the cap 2 alone and in the connected state. Further, since the projections 11c are provided in two stages, the caps 2 can be stably connected to each other. The projections 11c can be provided in three or more stages.

FIG. 4 shows a cap 3 according to an embodiment in which the above-mentioned cap 2 is further modified. FIG. 4 (a) is a perspective view of the cap 3, and FIG.
(A) is a cross-sectional view taken along the line AA. Note that the same components as those of the cap 2 shown in FIG. 3 are denoted by the same reference numerals, and redundant description will be omitted. The basic structure of the cap 3 is the same as that of the cap 2, but the outer peripheral wall 11b of the open end 11e of the inner cylindrical portion 11 and the inner peripheral wall 10 of the outer cylindrical portion end 10f.
a is connected to and integrated by the support portion 10d. Thus, the hermetic chamber 11d of the inner cylinder portion 11 is not included in the outer cylinder portion 10 and has a so-called single cap (single cap) configuration. That is, the caps 1 and 2 shown in FIGS. 1 and 3 have a double cap configuration in which a part of the airtight chamber 11d of the inner cylinder portion is included in the outer cylinder portion 10. The structure is simplified as a single cap configuration. In the present embodiment, in order to obtain a predetermined depth of the airtight chamber 11d, the entire length of the inner cylinder 11 (the length of protrusion from the outer cylinder 10) is increased.
The interval between the steps of the protrusion 11c provided on the base 1b is widened.

In the caps 1 to 3 described above, the projection 11c provided on the inner cylindrical portion 11 is formed in a substantially square shape along the circumferential direction. However, the projection 11c may be formed in a semicircular shape or the like. It is possible. By forming the projection 11c in a semicircular shape, it is possible to prevent the injury to the throat wall and tracheal wall due to the projection 11c when swallowed by mistake, and it is possible to further improve safety. Furthermore, in the above-described embodiment, the configuration is described in which the support portion 10d is provided at the end of the outer cylindrical portion 10, but the present invention is not limited to such a configuration. In other words, the support portion 10d may be provided at a position where the support portion 10d is moved from the end of the outer cylinder portion 10 in the axial direction by a predetermined length to the inside of the outer cylinder portion 10, and the same effect is obtained. It is possible.

[0021]

According to the cap for an applicator of the present invention, a projection is provided on the inner cylindrical portion, and a rational structure having both functions of connecting the caps and securing a stable air flow path is provided. In addition, sufficient safety can be ensured even when the caps are connected to each other as well as the cap alone.

[Brief description of the drawings]

FIG. 1A is a perspective view of an applicator cap according to an embodiment of the present invention, FIG. 1B is a cross-sectional view of FIG.
(C) is a view in the direction of arrow B in (a), and (d) is a view taken in
FIG. 7E is a cross-sectional view taken along the arrow C, and FIG.

FIG. 2 is a perspective view showing an air flow path formed by connecting the caps shown in FIG. 1 to each other.

FIG. 3 is a perspective view showing a cap for an applicator according to another embodiment of the present invention.

FIG. 4A is a perspective view of a coating tool cap according to still another embodiment of the present invention, and FIG. 4B is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1, 2, 3 Applicator cap 10 Outer tube 10a Inner wall (inner wall of outer tube) 10c Gap 10d Support 10e Communication hole 11 Inner tube 11a Closed end (closed end of inner tube) 11b Outer wall (Outer peripheral wall of inner cylindrical portion) 11c Projection 11f Gap (flow path)

Claims (5)

[Claims] 1. A pair of connectable applicator caps attached to both ends of an applicator, wherein at least one of the caps is configured to connect a closed end side of an inner cylindrical portion having one end closed to the inner cylindrical portion. Is formed integrally by projecting from one end of an outer cylindrical portion having an inner diameter larger than the outer diameter of the outer cylindrical portion and supported by a supporting portion provided between an inner peripheral wall of the outer cylindrical portion and an outer peripheral wall of the inner cylindrical portion. A plurality of protrusions are provided on the outer peripheral wall of the inner cylinder portion between a position separated by a predetermined length and a closed end of the inner cylinder portion, and a communication hole is provided in the support portion in the axial direction. When the caps are connected to each other by externally engaging the inner cylindrical wall of the other cap with the inner cylindrical wall of the other cap, the outer cap of the other cap is formed between the inner cylindrical wall of the other cap and the protrusions. Gap, the communication hole of the one cap, and the one A cap for an applicator, wherein internal spaces of the caps communicate with each other via a gap formed between an inner peripheral wall of an outer cylindrical portion and an outer peripheral wall of an inner cylindrical portion of the cap. 2. The cap for an applicator according to claim 1, wherein the protrusions are provided radially at predetermined intervals on an outer peripheral wall of the inner cylindrical portion. 3. The applicator cap according to claim 1, wherein the communication hole is provided in the support portion in an axial direction corresponding to a position of the projection. 4. The applicator cap according to claim 1, wherein the support portion is provided at one end of the outer cylindrical portion. 5. The applicator cap according to claim 1, wherein the caps have the same shape and are interconnected to communicate with each other.